[mutter] Added region.h to installed headers

[Tomas Frydrych <tomasf src gnome org>]

commit ce53f35974db79c4e47ef4a6c85682442995f3a3
Author: Tomas Frydrych <tf linux intel com>
Date:   Fri Aug 27 09:42:48 2010 +0100

    Added region.h to installed headers
    
    region.h is explicictely included by the installed preview-widget.h

 src/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index cac9676..bd8ed58 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -141,6 +141,7 @@ libmutter_private_la_SOURCES=			\
 	include/common.h			\
 	ui/preview-widget.c			\
 	ui/preview-widget.h			\
+	ui/region.h				\
 	ui/theme-parser.c			\
 	ui/theme-parser.h			\
 	ui/theme.c				\