DragonFlyBSD

Hi,

This patch adds some features/improvements from FreeBSD:

- Add a '-k' option which does not remove input file, like bzip2(1) do.
 - Use better representation of 'S:' by expanding ':' to '.suffix'
 - Simulate GNU gzip(1) behavior where full filename is being output in
verbose mode when doing recursive[1].

If someone have commit access liked the patch, you can also find the
patched checked out version on leaf's /home/delphij/build/gzip.

Note, that I have intentionally left .Dd in gzip.1 intact, because I do
not know the exact date or wheather it would hit the tree. When
committing the code please consider bumping the date.

Cheers,
--
Xin LI <delphij@delphij.net> http://www.delphij.net/
FreeBSD - The Power to Serve!