[gitg/vala] Update libgit2 and libgit2-glib submodules

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

commit 93fe2bd20539d96faa1669ecdb4d7cee83873de2
Author: Jesse van den Kieboom <jesse vandenkieboom epfl ch>
Date:   Fri May 4 17:11:17 2012 +0200

    Update libgit2 and libgit2-glib submodules

 libgit2      |    2 +-
 libgit2-glib |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libgit2 b/libgit2
index 242a1ce..2218fd5 160000
--- a/libgit2
+++ b/libgit2
@@ -1 +1 @@
-Subproject commit 242a1cea8d66d9ec185044f345b22fec1940178f
+Subproject commit 2218fd57a50ceb851cb131939bf0747e072e40f6
diff --git a/libgit2-glib b/libgit2-glib
index 1a17238..b9d7c2a 160000
--- a/libgit2-glib
+++ b/libgit2-glib
@@ -1 +1 @@
-Subproject commit 1a17238b82e5d4ab65be78d90f356d2bf4aba912
+Subproject commit b9d7c2a00ffac47552f5dc97faf29b18f8bf869b