hdup 1.6.16 gzip/bzip issue

Hello,

   I was testing hdup yesterday to do a backup to a remote machine. I
set compression to bzip in the configuration file of the local machine.
When I logged into the remote machine I found the file extension was
tar.gz when I expected tar.bz2. I ran the command file against the
filename and it returned that it was the bzip2 format. So hdup had
respected my choice of bzip, but a bug had caused the extension to be
incorrect. I was about to send in a bug report when I realized maybe it
would work as expected if I defined compression=bzip on both sides. So I
did and it had the correct extension this time. I have looked over the
documentation and couldn't find mention of this.

   The documentation is fairly good. I am a big fan of learn by example.
I do think the documentation could use some review for clarity.

   Thank you very much for this project. It suits my needs very well.
One thing that would be nice is to switch the project from using mcrypt
to use gpg. The reasoning is two fold. One is that gpg is much more
commonly included in distributions. I am having to hunt down and build
my own packages for mcrypt and libmcrypt. The second is that you can
probably get better security in a number of ways from gpg.