Log Message:
Update mathomatic to 14.4.4.

Changes since 14.3.6:

- Perfected the user interface for the sum, product, and integrate
  commands.
- Restored initial full simplify in the limit command for better
  results, that was unintentionally removed in version 14.1.0.
- Fixed an endless loop in simplification; results look better, too.
- Added "set save" command, which makes all current session options
  permanent, by saving them in "~/.mathomaticrc".  "set no save"
  removes this file.
- Added "mathomatic -s" option, which stands for secure mode.  This is
  a run-time option that disallows shelling out and writing files, and
  was created for use on public servers that can't use the SECURE
  compile-time define.
- Doubled the default maximum mathematical expression size to allow
  larger expressions.
- A fatal compilation error when compiling with defines other than
  UNIX was fixed.
- Slight improvement made to simplification; results are more simple
  and stable.
- The maximum integer that can be factored has been raised from 14 to
  15 decimal digits.
- Small fix made to fraction command and "simplify fraction" for
  better looking fractions.
- Added a "simplify quickest" command option, which does no
  unfactoring nor factoring.
- Made full simplification more efficient and simpler by cutting out
  unnecessary loops.
- Improved the divide command and enabled its use in the symbolic math
  library.  Enabled code and variables commands in library, too.
  Currently, library output of these 3 commands can only be gathered
  by redirecting to a file.
- Added "set autoselect" and "set auto" options.  Use \ 
"set no auto" to
  always store entered expressions into equation spaces, unless it is
  a command.