Part II of the bones tracking patch. Change umpteen different outrip()
routines to handle its new time_t argument, and use formatkiller() instead
of directly accessing killer.{format,name} and killed_by_prefix[]. The
latter is now static within formatkiller().
The many sys/* and win/* changes are untested....
- "Saved game" dialog (could be useful in other ports - plain C code used)
- "splash screen"
- compact mode cleanup for 240x320 displays
- messages-on-map overlay display
- allows online reading of Guidebook in HTML format (coming soon)