*fix* ignore SIGCHLD in way that BSD and linux support

*fix* default background id 0 for panel if not specified in the config file



git-svn-id: http://tint2.googlecode.com/svn/trunk@517 121b4492-b84c-0410-8b4c-0d4edfb3f3cc

src/panel.c

@@ -156,6 +156,8 @@ void init_panel()
 
 		if (panel_config.monitor < 0)
 			p->monitor = i;
+		if ( p->area.bg == 0 )
+			p->area.bg = &g_array_index(backgrounds, Background, 0);
 		p->area.parent = p;
 		p->area.panel = p;
 		p->area.on_screen = 1;