grepmail version 3.1

Grepmail searches a normal or gzip'ed mailbox for a given regular expression,
and returns those emails that match it. Piped input is allowed, and date
restrictions are supported.

New in this version: Modified the decompression to be more compatible with
older versions of gzip. Improved error checking so that "grepmail -h" prints a
usage message. Added -m flag, which causes an "X-Mailfolder" line to be added
to the header, thereby showing which folder contained the message.

Written by David Coppit (coppit@cs.virginia.edu,
  http://www.cs.virginia.edu/~dwc3q/index.html)

Please send me any modifications you make. (for the better, that is. :) I have
a suite of tests that I can give you if you ask.

This code is distributed under the GNU General Public License (GPL). See
http://www.opensource.org/gpl-license.html and http://www.opensource.org/.
