[mm-common] Build: don't save time stamps in skeletonmm.tar.gz

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 87e7cfcaf0ce7272eff698fe63dece33f681a55b
Author: Michael Biebl <biebl debian org>
Date:   Sun Apr 17 16:53:43 2016 +0200

    Build: don't save time stamps in skeletonmm.tar.gz
    
    Bug: https://bugzilla.gnome.org/show_bug.cgi?id=765108

 Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index d1dc972..3fe0f3d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -163,7 +163,7 @@ util/mm-common-prepare.1: $(srcdir)/util/mm-common-prepare.1.in Makefile
 
 # Create tar archive of skeletonmm for installation.
 skeletonmm.tar.gz: $(skeletonmm_files)
-       $(AM_V_GEN)($(srctar_stdout) $(skeletonmm_files)) | gzip -c >$@
+       $(AM_V_GEN)($(srctar_stdout) $(skeletonmm_files)) | gzip -c -n >$@
 
 include $(top_srcdir)/build/dist-changelog.am