[gimp] plug-ins: add all metadata sources to SOURCES

[Michael Natterer <mitch src gnome org>]

commit 5ff921853a4aa8223821769f182e4e922076a0b2
Author: Michael Natterer <mitch gimp org>
Date:   Sat Jul 8 09:47:35 2017 +0200

    plug-ins: add all metadata sources to SOURCES

 plug-ins/metadata/Makefile.am |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/plug-ins/metadata/Makefile.am b/plug-ins/metadata/Makefile.am
index 6d53b40..61df78a 100644
--- a/plug-ins/metadata/Makefile.am
+++ b/plug-ins/metadata/Makefile.am
@@ -29,12 +29,17 @@ libexec_PROGRAMS = \
        metadata-viewer
 
 metadata_editor_SOURCES = \
-       metadata-impexp.c               \
+       metadata-editor.c       \
+       metadata-editor.h       \
+       metadata-impexp.c       \
+       metadata-impexp.h       \
+       metadata-misc.h         \
+       metadata-tags.h         \
        metadata-xml.c          \
-       metadata-editor.c
+       metadata-xml.h
 
 metadata_viewer_SOURCES = \
-  metadata-viewer.c
+       metadata-viewer.c
 
 AM_CPPFLAGS = \
        -I$(top_srcdir) \