[gcab] build-sys: fix re-autreconf from dist

[Marc-Andre Lureau <malureau src gnome org>]

commit da4cc1bae1c7cebf0c7a81c9855351e02b294a15
Author: Marc-André Lureau <marcandre lureau gmail com>
Date:   Mon Mar 16 23:11:04 2015 +0100

    build-sys: fix re-autreconf from dist
    
    Ship git-version-gen!

 Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 87b5984..a92c156 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -94,6 +94,7 @@ EXTRA_DIST =                                  \
        $(BUILT_SOURCES)                        \
        libgcab/gcab-enums.c.etemplate          \
        libgcab/gcab-enums.h.etemplate          \
+       build-aux/git-version-gen               \
        $(NULL)
 
 if GIR