[gimp] libgimp, libgimpbase: don't use a fixed GIMP 2.10 version number in exif metadata.

[Jacob Boerema <jboerema src gnome org>]

commit 8e97d56d1e8b45be8fbb85af33b759192cf2b4df
Author: Jacob Boerema <jgboerema gmail com>
Date:   Sat Oct 24 14:23:53 2020 -0400

    libgimp, libgimpbase: don't use a fixed GIMP 2.10 version number in exif metadata.

 libgimp/gimpimagemetadata-save.c | 2 +-
 libgimpbase/gimpmetadata.c       | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libgimp/gimpimagemetadata-save.c b/libgimp/gimpimagemetadata-save.c
index a348b5d58c..a4d65dc0e3 100644
--- a/libgimp/gimpimagemetadata-save.c
+++ b/libgimp/gimpimagemetadata-save.c
@@ -375,7 +375,7 @@ gimp_image_metadata_save_finish (GimpImage              *image,
 
       gexiv2_metadata_set_tag_string (GEXIV2_METADATA (metadata),
                                       "Xmp.xmp.CreatorTool",
-                                      N_("GIMP 2.10"));
+                                      N_("GIMP"));
 
       gexiv2_metadata_set_tag_string (GEXIV2_METADATA (metadata),
                                       "Xmp.GIMP.Version",
diff --git a/libgimpbase/gimpmetadata.c b/libgimpbase/gimpmetadata.c
index a4bf9b755a..2170d4a4f4 100644
--- a/libgimpbase/gimpmetadata.c
+++ b/libgimpbase/gimpmetadata.c
@@ -450,7 +450,7 @@ gimp_metadata_add_xmp_history (GimpMetadata *metadata,
 
   gexiv2_metadata_set_tag_string (GEXIV2_METADATA (metadata),
                                   tagstr,
-                                  "Gimp 2.10 "
+                                  PACKAGE_STRING " "
 #if defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
                                   "(Windows)");
 #elif defined(__linux__)