[libgit2-glib] Add to EXAMPLE_PROGS instead of redefining it

[Jesse van den Kieboom <jessevdk src gnome org>]

commit f9f06619056d860c8f9260343ddac772c3735473
Author: Jesse van den Kieboom <jesse vandenkieboom epfl ch>
Date:   Wed Oct 3 09:18:08 2012 +0200

    Add to EXAMPLE_PROGS instead of redefining it

 examples/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/examples/Makefile.am b/examples/Makefile.am
index c44e9df..5c8b2c9 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -7,7 +7,7 @@ EXAMPLE_PROGS		= general
 general_SOURCES		= general.c
 general_LDADD		= $(progs_ldadd)
 
-EXAMPLE_PROGS		= walk
+EXAMPLE_PROGS		+= walk
 walk_SOURCES		= walk.c
 walk_LDADD		= $(progs_ldadd)