[ostree] Bump libgsystem dependency

[Colin Walters <walters src gnome org>]

commit 911eafd0d8a96107506e34f21be14a02776a85d2
Author: Colin Walters <walters verbum org>
Date:   Thu Jan 8 13:00:27 2015 -0500

    Bump libgsystem dependency

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 319a744..80dc69b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -42,7 +42,7 @@ AC_CHECK_HEADER([attr/xattr.h],,[AC_MSG_ERROR([You must have attr/xattr.h from l
 
 PKG_PROG_PKG_CONFIG
 
-GIO_DEPENDENCY="gio-unix-2.0 >= 2.36.0 libgsystem >= 2014.3"
+GIO_DEPENDENCY="gio-unix-2.0 >= 2.36.0 libgsystem >= 2015.1"
 PKG_CHECK_MODULES(OT_DEP_GIO_UNIX, $GIO_DEPENDENCY)
 
 dnl 5.1.0 is an arbitrary version here