[gtk+/gtk-3-22] build: Disable deprecation warnings in broadway

[Emmanuele Bassi <ebassi src gnome org>]

commit eba10161c125e3e0e1e66443f8e63f5cc6bc9a8d
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue May 9 14:30:40 2017 +0100

    build: Disable deprecation warnings in broadway
    
    Avoid compiler warnings while building code that uses deprecated API.

 gdk/broadway/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gdk/broadway/Makefile.am b/gdk/broadway/Makefile.am
index f1c3923..e04013f 100644
--- a/gdk/broadway/Makefile.am
+++ b/gdk/broadway/Makefile.am
@@ -9,6 +9,7 @@ AM_CPPFLAGS =                           \
        -DG_LOG_DOMAIN=\"Gdk\"          \
        -DG_LOG_USE_STRUCTURED=1        \
        -DGDK_COMPILATION               \
+       -DGDK_DISABLE_DEPRECATION_WARNINGS \
        -I$(top_srcdir)                 \
        -I$(top_srcdir)/gdk             \
        -I$(top_builddir)/gdk           \