[gtkmm/gtkmm-2-24] Pixbuf: Avoid deprecations warnings that break --enable-warnings=fatal.

[Murray Cumming <murrayc src gnome org>]

commit 33f4ecd007b2e4bd3511b36add8734b362c80d40
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Aug 14 14:25:57 2015 +0200

    Pixbuf: Avoid deprecations warnings that break --enable-warnings=fatal.
    
    Such as during distcheck.

 gdk/src/pixbuf.ccg |    5 +++++
 gdk/src/pixbuf.hg  |    3 +++
 2 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gdk/src/pixbuf.ccg b/gdk/src/pixbuf.ccg
index 946d600..f1a19c4 100644
--- a/gdk/src/pixbuf.ccg
+++ b/gdk/src/pixbuf.ccg
@@ -21,6 +21,11 @@
 #include <gdk/gdk.h>
 #include <gdk-pixbuf/gdk-pixbuf.h>
 
+//Turn off all deprecation warnings, to avoid the warning about
+//gdk_pixbuf_new_from_inline() in the generated code.
+//We don't bother using G_GNUC_END_IGNORE_DEPRECATIONS
+//because we are happy to keep it active for the whole file.
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
 
 namespace
 {
diff --git a/gdk/src/pixbuf.hg b/gdk/src/pixbuf.hg
index 5f33591..994aa83 100644
--- a/gdk/src/pixbuf.hg
+++ b/gdk/src/pixbuf.hg
@@ -17,6 +17,9 @@
 
 #m4 _PUSH(SECTION_CC_PRE_INCLUDES)
 #undef GDK_DISABLE_DEPRECATED
+#define GDK_DISABLE_DEPRECATION_WARNINGS 1
+#undef GDK_PIXBUF_DISABLE_DEPRECATED
+#define GDK_PIXBUF_DISABLE_DEPRECATION_WARNINGS 1
 #m4 _POP()
 // This is for including the config header before any code (such as
 // the #ifndef GDKMM_DISABLE_DEPRECATED in deprecated classes) is generated: