Continued porting to win32.
* Added win32 console support to tcutil.c.
* Modified testplan.c to remove timersub (not portable) and use Sleep
  instead of select on win32.
Cleaned up the Makefile
* Removed test programs that are not included.
* Removed some stuff specific to my account at work !!
* Moved the termcap library (default is to use ncurses) to a variable so
  it is easily overridden.