[libgit2-glib] Add missing include

[Ignacio Casal Quinteiro <icq src gnome org>]

commit cdf32a5a3a69f684d15465d935f23d539b55cb20
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Mon Jul 1 09:11:13 2013 +0200

    Add missing include

 libgit2-glib/ggit.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/libgit2-glib/ggit.h b/libgit2-glib/ggit.h
index dda6353..2e8cd50 100644
--- a/libgit2-glib/ggit.h
+++ b/libgit2-glib/ggit.h
@@ -42,6 +42,7 @@
 #include <libgit2-glib/ggit-index-entry.h>
 #include <libgit2-glib/ggit-index-entry-resolve-undo.h>
 #include <libgit2-glib/ggit-main.h>
+#include <libgit2-glib/ggit-merge-tree-options.h>
 #include <libgit2-glib/ggit-native.h>
 #include <libgit2-glib/ggit-object.h>
 #include <libgit2-glib/ggit-object-factory.h>