[json-glib] build: Export MAINTAINER_CFLAGS

[Emmanuele Bassi <ebassi src gnome org>]

commit 3b994a52d9c34f67e4ac52aa4bb0c380789fbd60
Author: Emmanuele Bassi <ebassi linux intel com>
Date:   Tue Oct 27 17:40:55 2009 +0000

    build: Export MAINTAINER_CFLAGS
    
    Apparently, the MAINTAINER_CFLAGS were ignored.

 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index bf15968..d0d9d99 100644
--- a/configure.ac
+++ b/configure.ac
@@ -120,6 +120,7 @@ AS_IF([test "x$enable_maintainer_flags" = "xyes" && test "x$GCC" = "xyes"],
                             -Winit-self -Wempty-body"])
       ]
 )
+AC_SUBST([MAINTAINER_CFLAGS])
 
 GTK_DOC_CHECK([1.11])