[gtk+] configure.ac: Use AS_HELP_STRING instead deprecated AC_HELP_STRING

[Javier Jardón <jjardon src gnome org>]

commit 37bade27f548dd1b82a1f5ab0121eafa90f3cdde
Author: Javier Jardón <jjardon gnome org>
Date:   Mon May 16 12:28:56 2011 +0100

    configure.ac: Use AS_HELP_STRING instead deprecated AC_HELP_STRING

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index bb0865a..4e0fb6f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -298,11 +298,11 @@ AC_ARG_ENABLE(quartz-backend,
                               [enable the quartz gdk backend])],
 			      [backend_set=yes])
 AC_ARG_ENABLE(broadway-backend,
-              [AC_HELP_STRING([--enable-broadway-backend],
+              [AS_HELP_STRING([--enable-broadway-backend],
                               [enable the broadway (HTML5) gdk backend])],
 			      [backend_set=yes])
 AC_ARG_ENABLE(wayland-backend,
-              [AC_HELP_STRING([--enable-wayland-backend],
+              [AS_HELP_STRING([--enable-wayland-backend],
                               [enable the wayland gdk backend])],
 			      [backend_set=yes])