Upstream patch to fix link against libm

The upstream patch is modified to also include the necessary
Makefile.in, which avoids the need for autoreconfiguring the
package. Autoreconfiguring the package unfortunately doesn't work, due
to AM_GCONF_SOURCE_2 and AM_NLS macros being missing.

http://git.gnome.org/browse/metacity/commit/src/tools/Makefile.am?id=13d0d52eb885598885b6ff4b73c795c8f29c2a6b

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

From 13d0d52eb885598885b6ff4b73c795c8f29c2a6b Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Sun, 02 May 2010 14:50:42 +0000
Subject: fails to link with pedantic linkers

---
(limited to 'src/tools/Makefile.am')

Index: b/src/tools/Makefile.am
===================================================================
--- a/src/tools/Makefile.am
+++ b/src/tools/Makefile.am
@@ -26,7 +26,7 @@
 
 metacity_message_LDADD= @METACITY_MESSAGE_LIBS@
 metacity_window_demo_LDADD= @METACITY_WINDOW_DEMO_LIBS@
-metacity_mag_LDADD= @METACITY_WINDOW_DEMO_LIBS@
+metacity_mag_LDADD= @METACITY_WINDOW_DEMO_LIBS@ -lm
 metacity_grayscale_LDADD = @METACITY_WINDOW_DEMO_LIBS@
 
 EXTRA_DIST=$(icon_DATA)
Index: b/src/tools/Makefile.in
===================================================================
--- a/src/tools/Makefile.in
+++ b/src/tools/Makefile.in
@@ -281,7 +281,7 @@
 
 metacity_message_LDADD = @METACITY_MESSAGE_LIBS@
 metacity_window_demo_LDADD = @METACITY_WINDOW_DEMO_LIBS@
-metacity_mag_LDADD = @METACITY_WINDOW_DEMO_LIBS@
+metacity_mag_LDADD = @METACITY_WINDOW_DEMO_LIBS@ -lm
 metacity_grayscale_LDADD = @METACITY_WINDOW_DEMO_LIBS@
 EXTRA_DIST = $(icon_DATA)
 all: all-am