[crossfire] Crossedit patches

[Kevin Rudat]

Crossedit - which of these would you accept, please?
 * Fix: not drawing floor at weird times.
 * Fix: large faces
 * Fix: regions
 * Fix: Map attribute editor 
 * Fix(?): Using window manager's close functions closes the window rather
   than stopping crossedit.
 * Feature: Display only certain things, like the Java editor can.
 * Feature: crossedit starts faster - images uploaded to xserver when needed
 * Some user documentation

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Kevin Rudat