Log Message:
Update mathomatic to 11.3f.

Changes since 11.3c:

Improved eliminate command error handling.

Added "eliminate all" command.

Code cleanup.

Man pages for the prime number tools were contributed
by David Moreno Garza.  Many thanks.

Renamed the Mathomatic directory in the source tarball to
"mathomatic-`cat VERSION`".

Added several comments to the source code.

Renamed prime number tools to "matho-*".

Improvement to full simplification.

Tried something new with uf_simp() that fixed a problem with Mathomatic
solve complicating expressions.

Minor bugfix to eliminate command.