[gnome-clocks] Update the vala dependency to 21.2

[Evgeny Bobkin <ebobkin src gnome org>]

commit b2c64084cd85c367570fc1b4f7de372000a2e6c5
Author: Evgeny Bobkin <evgen ibqn gmail com>
Date:   Fri Sep 13 11:37:58 2013 +0200

    Update the vala dependency to 21.2

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index ba55509..0648f33 100644
--- a/configure.ac
+++ b/configure.ac
@@ -27,7 +27,7 @@ AC_PROG_CC
 AC_PROG_CC_STDC
 AC_PROG_INSTALL
 AC_PROG_MAKE_SET
-AM_PROG_VALAC([0.21.1])
+AM_PROG_VALAC([0.21.2])
 
 # _NL_TIME_FIRST_WEEKDAY is an enum and not a define
 AC_MSG_CHECKING([for _NL_TIME_FIRST_WEEKDAY])