[gtkglarea] Make maintiner mode enabled by default

[Javier Jardón <jjardon src gnome org>]

commit e34747cc5b9b6496c17e1ebfd2b6cab68b2cc65e
Author: Javier Jardón <jjardon gnome org>
Date:   Thu Feb 27 02:20:33 2014 +0000

    Make maintiner mode enabled by default
    
    See http://blogs.gnome.org/desrt/2011/09/08/am_maintainer_mode-is-not-cool/

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 36b88ac..cfc62fc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,6 +3,7 @@ AC_INIT(gtkgl, 2.0.2)
 AC_CONFIG_AUX_DIR(.auto)
 AC_CONFIG_HEADER(config.h)
 AM_INIT_AUTOMAKE([no-define])
+AM_MAINTAINER_MODE([enable])
 
 #shared library versioning
 GTKGL_LIBRARY_VERSION=1:1:0
@@ -31,7 +32,6 @@ AC_PROG_CPP
 AC_LIBTOOL_WIN32_DLL
 AM_PROG_LIBTOOL
 AM_SANITY_CHECK
-AM_MAINTAINER_MODE
 
 dnl
 dnl  Check for the operating system