[gmime] Use AM_CPPFLAGS instead of INCLUDES for gir compilation

[Jeffrey Stedfast <fejj src gnome org>]

commit b5f556d3f1d9a5321b47284c2256f5f86df8dc36
Author: Jeffrey Stedfast <jeff xamarin com>
Date:   Wed Jan 13 09:20:57 2016 -0500

    Use AM_CPPFLAGS instead of INCLUDES for gir compilation
    
    Fixes bug #757720

 gmime/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gmime/Makefile.am b/gmime/Makefile.am
index 31002b3..6808cc5 100644
--- a/gmime/Makefile.am
+++ b/gmime/Makefile.am
@@ -181,7 +181,7 @@ INTROSPECTION_COMPILER_ARGS = --includedir=$(srcdir)
 if HAVE_INTROSPECTION
 GMime-2.6.gir: libgmime-2.6.la
 GMime_2_6_gir_INCLUDES = GObject-2.0 Gio-2.0
-GMime_2_6_gir_CFLAGS = $(INCLUDES)
+GMime_2_6_gir_CFLAGS = $(AM_CPPFLAGS)
 GMime_2_6_gir_LIBS = libgmime-2.6.la
 GMime_2_6_gir_FILES = $(gmimeinclude_HEADERS) $(libgmime_2_6_la_SOURCES)
 GMime_2_6_gir_EXPORT_PACKAGES = gmime-2.6