Big changes in code of clients, screens and widgets.

- Moved and altered code to create, destroy and manipulate clients, screens
  and widgets in an OO-like manner.
- Moved command execution code to a commands directory, splitting commands to
  what subject they are concerned.
- Menus are temporary disabled while working on new menu structure.

configure.in

@@ -159,6 +159,7 @@ LCD_DRIVERS_SELECT
 AC_OUTPUT(Makefile
 	shared/Makefile
 	server/Makefile
+	server/commands/Makefile
 	server/drivers/Makefile
 	clients/Makefile
 	clients/lcdproc/Makefile