[librest] build: Check for glib-mkenums

[Ross Burton <rburton src gnome org>]

commit ccb38b193e920ebdf26dce2b8e9115a028bf90ba
Author: Ross Burton <ross linux intel com>
Date:   Mon Jul 11 16:42:46 2011 +0100

    build: Check for glib-mkenums

 configure.ac |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5e86419..2daba6a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -62,6 +62,8 @@ AS_IF(
 GTK_DOC_CHECK([1.13], [--flavour no-tmpl])
 GOBJECT_INTROSPECTION_CHECK([0.6.7])
 
+AC_PATH_PROG([GLIB_MKENUMS],[glib-mkenums])
+
 localedir=${datadir}/locale
 AC_SUBST(localedir)