[pango] Make PANGO_GLYPH flags an enum to make gobject-introspection happy.

[John Ralls <jralls src gnome org>]

commit 7274bd56db3ce2f02594687a307d22aa99c787c4
Author: John Ralls <jralls ceridwen us>
Date:   Mon Nov 12 19:38:30 2012 -0800

    Make PANGO_GLYPH flags an enum to make gobject-introspection happy.
    
    See bug 688356

 pango/pango-font.h |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)
---
diff --git a/pango/pango-font.h b/pango/pango-font.h
index eea27b4..ce1a421 100644
--- a/pango/pango-font.h
+++ b/pango/pango-font.h
@@ -374,10 +374,12 @@ struct _PangoFontClass
 #define PANGO_UNKNOWN_GLYPH_HEIGHT 14
 
 #endif /* PANGO_ENABLE_BACKEND */
-
-#define PANGO_GLYPH_EMPTY           ((PangoGlyph)0x0FFFFFFF)
-#define PANGO_GLYPH_INVALID_INPUT   ((PangoGlyph)0xFFFFFFFF)
-#define PANGO_GLYPH_UNKNOWN_FLAG    ((PangoGlyph)0x10000000)
+enum
+{
+  PANGO_GLYPH_EMPTY =           ((PangoGlyph)0x0FFFFFFF),
+  PANGO_GLYPH_INVALID_INPUT =   ((PangoGlyph)0xFFFFFFFF),
+  PANGO_GLYPH_UNKNOWN_FLAG =    ((PangoGlyph)0x10000000),
+};
 #define PANGO_GET_UNKNOWN_GLYPH(wc) ((PangoGlyph)(wc)|PANGO_GLYPH_UNKNOWN_FLAG)