Add a couple of missing .gitignore entries for files put into
place when building. include/tile.h is genearated for tiles
and dat/NetHack.ad is copied for X11 resource definitions.
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....
