Log Message:
Update to 0.6.3, provided by Richard Rauch:
Changes since 0.6.2:
 * Some WIN32 gamemode fixes.
 * New, experimental "stay on top" option for windows---where
   supported (some window managers under X; also on WIN32).
 * A fix to subwindows on WIN32 (longstanding problem).
 * Lots of documentation refinements.
 * Deprecation of 3 old functions that have fully functional
   alternatives.