Add new configuration parameter panel_window_name to set WM_NAME (and WM_ICON_NAME) to identify multiple instances of tint2. (Issue 460).

git-svn-id: http://tint2.googlecode.com/svn/trunk@690 121b4492-b84c-0410-8b4c-0d4edfb3f3cc

src/server.h

@@ -57,6 +57,7 @@ typedef struct Global_atom
 	Atom _NET_WM_STRUT;
 	Atom _NET_WM_ICON;
 	Atom _NET_WM_ICON_GEOMETRY;
+	Atom _NET_WM_ICON_NAME;
 	Atom _NET_CLOSE_WINDOW;
 	Atom UTF8_STRING;
 	Atom _NET_SUPPORTING_WM_CHECK;