[Stratagus-ccl] CCL Alteration: define-ui

[Jimmy Salmon]

The menu-panel has been redesigned.  The menu-button, network-menu-button, and
network-diplomacy-button sections have been moved inside menu-panel.

Example

  (define-ui ...
    ...

    'menu-panel (list
      'panel (list
        'file "graphics/ui/human/menubutton.png"
        'pos '(0 0))
      'menu-button '(
        pos (24 2)
        size (128 19)
        caption "Menu (~<F10~>)"
        style main)
      'network-menu-button '(
        pos (6 2)
        size (80 19)
        caption "Menu"
        style network)
      'network-diplomacy-button '(
        pos (90 2)
        size (80 19)
        caption "Diplomacy"
        style network)
    )

    ...
  )