Only skip checksum verification if the patch command was PATCH.

are bigger (!) than the newer revision...

in binary mode (oops).

overcome long filename problems.

Won't touch mart databases (or anything matching $avoid_re).
Will only work with revision 14 and 15 (or anything matching $require_re).

after cleaning up whatever it was doing at the time.  This means
restarting the process later is easier and safer.

Reordered call tree.
Corrected redirection bug.
Removed coprocess that Tru64 KornShell88 didn't like ("memory fault").

compressed.  Apparantly xdelta will recompress the patched file in a
way that might result in slight differences when compared to the
original file.

revisions of all databases on ftp.ensembl.org.  Uses the files
in /pub/<species>/data/mysql/<db>/*