Commented out or removed references to the borland compiler from setup and sysdep
Removed references to turbo c++ from watch.c
Removed borland turbo c++ defs from agenda.c
Removed references to borland turbo c++ from more files
Removed all references to the borland turbo c++ compiler
Deleted all references to MAC_MCW, WIN_MCW, and MAC_XCD

These are obsolete targets
Deleted shrtlnkn.h

This file is designed for linkers that can't support function names over six characters in length.
This is not an issue for my purposes.
Fixed a warning from the compiler in binary_operations.c

I was checking to see if an unsigned number was greater than or equal
to zero when that is implied by being unsigned.