Here are some planned future improvements.  If you would like to contribute,
send mail to me (karl@cs.umb.edu) first, so I can coordinate the work.


Rearrange dir lists so that when get a hit, dir moves to front.

Configuration files so, e.g., $TEXMFROOT can get evaluated at runtime.

Make default paths have $TEXMFROOT -- means have to have some way to set
  the default for that at compilation, unless config files will do?

Implement /?.

Do cd's in pathsrch, to keep the pathname length constant.

Separate the routines needed for path searching, and others that are here
  only because it's a common place.

Do right thing if both (e.g.) DVIPSMAKEPK and MAKETEXPK are set.
