[murrine] Added -lm to ensure linking with the math library

[Ken VanDine <kvandine src gnome org>]

commit 6e8eb24497d38a68bb4b884ea25accd18fc524e8
Author: Ken VanDine <ken vandine canonical com>
Date:   Wed Jan 25 11:05:43 2012 -0500

    Added -lm to ensure linking with the math library

 Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 7389a35..d839fcf 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -36,5 +36,5 @@ libmurrine_la_SOURCES = \
 	./src/stack-blur.h
 
 libmurrine_la_LDFLAGS = -module -avoid-version -no-undefined
-libmurrine_la_LIBADD =  $(GTK_LIBS) $(pixman_LIBS)
+libmurrine_la_LIBADD =  $(GTK_LIBS) $(pixman_LIBS) -lm