[gitg] Bump libgit2-glib requirement to 0.0.18

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

commit 181b832d3827376502d658fb649c7e47191e2fe1
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Mon Jun 30 13:36:54 2014 +0200

    Bump libgit2-glib requirement to 0.0.18

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5f792f0..fe99cf2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -90,7 +90,7 @@ GTK_REQUIRED_VERSION=3.12.0
 GTKSOURCEVIEW_REQUIRED_VERSION=3.10
 INTROSPECTION_REQUIRED=0.10.1
 WEBKITGTK_REQUIRED_VERSION=2.2
-LIBGIT2_GLIB_REQUIRED_VERSION=0.0.17
+LIBGIT2_GLIB_REQUIRED_VERSION=0.0.18
 
 PKG_CHECK_MODULES(LIBGITG, [
        gthread-2.0 >= $GLIB_REQUIRED_VERSION