[gtk+] Build gtk-doc scanner without deprecation warnings

[Matthias Clasen <matthiasc src gnome org>]

commit 668c31bf97a6d6fb6caa630d34a2ca705906e1dd
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jan 23 18:49:12 2014 -0500

    Build gtk-doc scanner without deprecation warnings
    
    Use of deprecated symbols is expected in this code,
    no need to warn about it.

 docs/reference/gtk/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gtk/Makefile.am b/docs/reference/gtk/Makefile.am
index 848bcd7..e66e20f 100644
--- a/docs/reference/gtk/Makefile.am
+++ b/docs/reference/gtk/Makefile.am
@@ -112,6 +112,7 @@ AM_CPPFLAGS = \
        -I$(top_builddir)       \
        -I$(top_builddir)/gdk   \
        -DGTK_ENABLE_BROKEN     \
+       -Wno-deprecated-declarations \
        $(GTK_DEBUG_FLAGS)      \
        $(GTK_DEP_CFLAGS)