Adapt assistant for c++ guid changes

src/import-export/csv-imp/assistant-csv-trans-import.cpp

@@ -27,6 +27,8 @@
     @author Copyright (c) 2012 Robert Fewell
 */
 
+#include <guid.hpp>
+
 extern "C"
 {
 #include "config.h"

src/import-export/csv-imp/test/utest-gnc-csv-imp-trans.cpp

@@ -21,6 +21,8 @@
  * 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652       *
  * Boston, MA  02110-1301,  USA       gnu@gnu.org                   *
  ********************************************************************/
+#include "guid.hpp"
+
 extern "C" {
 #include <config.h>
 #include <string.h>