[libgee] Require Vala 0.25.1 (for --hide-internal)

[Adam Dingle <adamd src gnome org>]

commit a475b9a14f370fea5cd2c6f7246a338e9b25c0f7
Author: Adam Dingle <adam medovina org>
Date:   Tue Sep 9 23:14:53 2014 -0400

    Require Vala 0.25.1 (for --hide-internal)

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 267e365..49a5d90 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,7 +66,7 @@ AS_IF([test "x$enable_consistency_check" != xno], [VALA_ADD_VALAFLAGS(-D CONSIST
 
 GOBJECT_INTROSPECTION_CHECK([0.9.0])
 
-VALA_CHECK([0.24.0])
+VALA_CHECK([0.25.1])
 
 AC_OUTPUT([Makefile
            gee-0.8.pc