[gimp/wip/Jehan/GimpUi.init] libgimp: 'gimp_ui' as GIR symbol prefix for autotools build too.

[Jehan <jehanp src gnome org>]

commit e570e97f9bc944535633502d7bcd7a9aa91ced3c
Author: Jehan <jehan girinstud io>
Date:   Sat Sep 26 21:04:16 2020 +0200

    libgimp: 'gimp_ui' as GIR symbol prefix for autotools build too.

 libgimp/Makefile.am | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/libgimp/Makefile.am b/libgimp/Makefile.am
index 79be437acc..f1d1496645 100644
--- a/libgimp/Makefile.am
+++ b/libgimp/Makefile.am
@@ -332,7 +332,8 @@ Gimp_@GIMP_API_MAJOR_VERSION@_@GIMP_API_MINOR_VERSION@_gir_FILES =  \
 
 Gimp_@GIMP_API_MAJOR_VERSION@_@GIMP_API_MINOR_VERSION@_gir_SCANNERFLAGS = \
        --identifier-prefix Gimp        \
-       --symbol-prefix gimp    \
+       --symbol-prefix gimp_ui         \
+       --symbol-prefix gimp            \
        --c-include="libgimp/gimp.h"
 
 ### Second GIR: GimpUi