- Separated the font caches for normal fonts and fontsets in WINGs (they can
have the same names and collide in the cache giving unwanted results)
- Updated the years in the copyright notices
- Removed MIN() and MAX() macros and replaced them with WMIN() and WMAX() from
WINGs.
- Added a hint that Window Maker crashed, to allow windows to be placed
in their correct previous positions after a crash situation and also to
preserve their state before the crash (minimized, shaded, hidden, ...)