Version History of COPY

ver. 0.01 -- the version sent to the alpha-testers.

ver. 1.00 -- the same as 0.01, but with the bugs fixed;
             never released to the public.

ver. 2.00 -- added two new features:  allowing spaces
             around the '+' separator; giving a warning
             if the destination file exists (/W switch).

ver. 3.00 -- fixed a bug in the handling of ctrl-z's 
             when appending files. Added new features:
             "replace only" option (/R switch), and
             "keep newer" option (/K switch). Changed 
             the /W switch so it acts like /C when
             concatenating files (this requires more
             responses from the user, but it prevents
             the user from inadvertently triggering a
             series of unwanted concatenations). Added
             code so that the destination file keeps the
             same date and time as the source file
             when appropriate.

ver. 3.01 -- code cleanup by Joe Cosentino
             Put the copyhlp() function in copy.c.  This eliminated the need
             for copyhlp.c