[gtk+] configure: Don't put glib version flags into pc files

[Benjamin Otte <otte src gnome org>]

commit a59ee09af8db7255fefa26f1c0ac5b7826d2602c
Author: Benjamin Otte <otte redhat com>
Date:   Mon Sep 21 20:31:03 2015 +0200

    configure: Don't put glib version flags into pc files
    
    Use a different CFLAGS variable to carry them. I chose the DEBUG_FLAGS
    because that's essentially what those flags are: debug helpers.

 configure.ac |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 2338831..b096e2e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -360,7 +360,7 @@ backend_immodules=
 have_gio_unix=no
 GDK_BACKENDS=
 GDK_EXTRA_LIBS=
-GDK_EXTRA_CFLAGS="$GLIB_VERSION_CFLAGS"
+GDK_EXTRA_CFLAGS=
 GDK_WINDOWING=
 PANGO_PACKAGES="pango pangocairo"
 
@@ -500,6 +500,7 @@ else
     GTK_DEBUG_FLAGS="-DG_ENABLE_DEBUG -DG_DISABLE_CAST_CHECKS"
   fi
 fi
+GTK_DEBUG_FLAGS="$GTK_DEBUG_FLAGS $GLIB_VERSION_CFLAGS"
 
 # Build time sanity check...
 AM_SANITY_CHECK