Move adjust_sql_options_string declaration to gnc-backend-dbi-priv.h.

It shouldn't be public, it needs to be exported only to the test file.

src/backend/dbi/gnc-backend-dbi-priv.h

@@ -114,4 +114,7 @@ typedef struct
 
 } GncDbiSqlConnection;
 
+/* external access required for tests */
+gchar* adjust_sql_options_string(const gchar *);
+
 #endif //GNC_BACKEND_DBI_PRIV_H

src/backend/dbi/gnc-backend-dbi.h

@@ -38,9 +38,6 @@ void gnc_module_init_backend_dbi(void);
  * statically linked into the application. */
 void gnc_module_finalize_backend_dbi(void);
 
-/* external access required for tests */
-gchar* adjust_sql_options_string(const gchar *);
-
 #ifndef GNC_NO_LOADABLE_MODULES
 /** This is the standarized initialization function of a qof_backend
  * GModule, but compiling this can be disabled by defining

src/backend/dbi/test/test-backend-dbi-basic.c

@@ -50,8 +50,6 @@
 #include "gncInvoice.h"
 /* For test_conn_index_functions */
 #include "../gnc-backend-dbi-priv.h"
-/* For test_adjust_options_string */
-#include "../gnc-backend-dbi.h"
 /* For version_control */
 #include <gnc-prefs.h>
 #include <qofsession-p.h>