Description of problem:
While testing an updated lxpanel for bug 3143 I noticed that Low Battery alerts were sent by lxpanel battery monitor using xmessage.
(xmessage is not a dependency of lxpanel so it has to installed separately)

The notifications produced by xmessage are very ugly and are not consistent with standard system messages in Mageia which use notification-daemon.

This patch will set lxpanel battery monitor to use notify-send for low battery messages which go to notification-daemon for a consistent Mageia look and feel.
The spec file will need a 'Requires:  libnotify'

--- lxpanel-0.5.8.orig/src/plugins/batt/batt.c	2011-07-29 13:37:01.000000000 +0100
+++ lxpanel-0.5.8/src/plugins/batt/batt.c	2011-11-24 17:46:47.000000000 +0000
@@ -435,7 +435,7 @@
 
     /* Apply more default options */
     if (! lx_b->alarmCommand)
-        lx_b->alarmCommand = g_strdup("xmessage Battery low");
+        lx_b->alarmCommand = g_strdup("notify-send 'Battery low'");
     if (! lx_b->backgroundColor)
         lx_b->backgroundColor = g_strdup("black");
     if (! lx_b->chargingColor1)