[PATCH][brutus-keyring] Add support for CentOS 5.2

[Luis Correia]

Signed-Off-By: Luis Correia <luis.f.correia-***@public.gmane.org>

Index: acinclude.m4
===================================================================
--- acinclude.m4 (revision 112)
+++ acinclude.m4 (working copy)
@@ -162,6 +162,9 @@
x5.2)
BRUTUS_DIST_RELEASE="CentOS%205.2"
;;
+ x5.3)
+ BRUTUS_DIST_RELEASE="CentOS%205.3"
+ ;;
*)
AC_MSG_ERROR([[Unable to determine CentOS release]])
;;