IDL Routine: DUPLICATE_PRO

If you send me <air_jlin@yahoo.com> your email address, I'll let you know of any major bugs that are found in this library.

13 Sep 2002: First public release. Current version only works for Unix. Other OS's should be able to be easily accomodated by adding the appropriate code in the "Break-up !PATH Into a String Array" section. I couldn't add these in because I don't have access to IDL on any other platform than Unix.