Prevent gcc from searching config.h in the current directory

This will avoid a ninja-build from picking up a config.h generated by the autotools build
(in the root build directory). Picking up the wrong config.h may lead to all kinds of
subtle issues if the autotools run was done with different options than the cmake run.

libgnucash/backend/xml/gnc-account-xml-v2.cpp

@@ -24,7 +24,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-address-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-backend-xml.cpp

@@ -29,7 +29,7 @@
  */
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 
 #include <glib.h>

libgnucash/backend/xml/gnc-bill-term-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-book-xml-v2.cpp

@@ -24,7 +24,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-budget-xml-v2.cpp

@@ -23,7 +23,7 @@
 
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-commodity-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <string.h>

libgnucash/backend/xml/gnc-customer-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-employee-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-entry-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-freqspec-xml-v2.cpp

@@ -24,7 +24,7 @@
 
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <string.h>

libgnucash/backend/xml/gnc-invoice-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-job-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-lot-xml-v2.cpp

@@ -24,7 +24,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-order-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-owner-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-pricedb-xml-v2.cpp

@@ -22,7 +22,7 @@
  *******************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <string.h>
 #include "gnc-pricedb.h"

libgnucash/backend/xml/gnc-recurrence-xml-v2.cpp

@@ -23,7 +23,7 @@
 
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <string.h>

libgnucash/backend/xml/gnc-schedxaction-xml-v2.cpp

@@ -22,7 +22,7 @@
  *******************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <string.h>

libgnucash/backend/xml/gnc-tax-table-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/gnc-transaction-xml-v2.cpp

@@ -23,7 +23,7 @@
  *******************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <string.h>

libgnucash/backend/xml/gnc-vendor-xml-v2.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <stdlib.h>

libgnucash/backend/xml/io-example-account.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <platform.h>
 #if PLATFORM(WINDOWS)

libgnucash/backend/xml/io-gncxml-gen.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 }
 
 #include "io-gncxml-gen.h"

libgnucash/backend/xml/io-gncxml-v1.cpp

@@ -27,7 +27,7 @@
 #include <guid.hpp>
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <stdlib.h>
 #include <string.h>

libgnucash/backend/xml/io-gncxml-v2.cpp

@@ -20,7 +20,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <platform.h>
 #if PLATFORM(WINDOWS)

libgnucash/backend/xml/io-utils.cpp

@@ -23,7 +23,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <stdio.h>
 

libgnucash/backend/xml/sixtp-dom-generators.cpp

@@ -24,7 +24,7 @@ extern "C"
 {
 #define __EXTENSIONS__
 
-#include "config.h"
+#include <config.h>
 #include <glib.h>
 
 #include <gnc-date.h>

libgnucash/backend/xml/sixtp-dom-parsers.cpp

@@ -22,7 +22,7 @@
  ********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <string.h>

libgnucash/backend/xml/sixtp-stack.cpp

@@ -22,7 +22,7 @@
  ********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 }
 #include "sixtp.h"
 #include "sixtp-stack.h"

libgnucash/backend/xml/sixtp-to-dom-parser.cpp

@@ -22,7 +22,7 @@
  ********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 

libgnucash/backend/xml/sixtp-utils.cpp

@@ -25,7 +25,7 @@
 #include <guid.hpp>
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <ctype.h>
 #include <glib.h>

libgnucash/backend/xml/sixtp.cpp

@@ -22,7 +22,7 @@
  ********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <glib/gstdio.h>

libgnucash/backend/xml/test/test-date-converting.cpp

@@ -19,7 +19,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include "test-stuff.h"
 #include "test-engine-stuff.h"

libgnucash/backend/xml/test/test-dom-converters1.cpp

@@ -23,7 +23,7 @@
  */
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <stdlib.h>
 #include <string.h>

libgnucash/backend/xml/test/test-dom-parser1.cpp

@@ -19,7 +19,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <stdlib.h>
 #include <string.h>

libgnucash/backend/xml/test/test-file-stuff.cpp

@@ -24,7 +24,7 @@
 
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <unistd.h>
 #include <sys/types.h>

libgnucash/backend/xml/test/test-kvp-frames.cpp

@@ -2,7 +2,7 @@
 
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <stdlib.h>
 

libgnucash/backend/xml/test/test-load-backend.cpp

@@ -26,7 +26,7 @@
  */
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 #include "qof.h"
 #include "cashobjects.h"
 #include "test-stuff.h"

libgnucash/backend/xml/test/test-load-example-account.cpp

@@ -22,7 +22,7 @@
  */
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 #include <glib.h>
 #include <string.h>
 #include <stdlib.h>

libgnucash/backend/xml/test/test-load-xml2.cpp

@@ -27,7 +27,7 @@
  */
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 #include <stdlib.h>
 #include <sys/types.h>
 #include <sys/stat.h>

libgnucash/backend/xml/test/test-save-in-lang.cpp

@@ -19,7 +19,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 #include <glib.h>
 #include <glib/gstdio.h>
 #include <unistd.h>

libgnucash/backend/xml/test/test-string-converters.cpp

@@ -19,7 +19,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <stdlib.h>
 #include "gnc-engine.h"

libgnucash/backend/xml/test/test-xml-account.cpp

@@ -23,7 +23,7 @@
  */
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <glib/gstdio.h>

libgnucash/backend/xml/test/test-xml-commodity.cpp

@@ -19,7 +19,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <glib/gstdio.h>

libgnucash/backend/xml/test/test-xml-pricedb.cpp

@@ -23,7 +23,7 @@
  */
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <glib/gstdio.h>

libgnucash/backend/xml/test/test-xml-transaction.cpp

@@ -23,7 +23,7 @@
  */
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 
 #include <glib.h>
 #include <glib/gstdio.h>

libgnucash/backend/xml/test/test-xml2-is-file.cpp

@@ -19,7 +19,7 @@
 \********************************************************************/
 extern "C"
 {
-#include "config.h"
+#include <config.h>
 #include <stdlib.h>
 #include <string.h>