release 1.42

I had a request a while back to create symlinks in my software archive site with a persistant name so that people can just link to and download the current version, whatever version that happens to be. I finally got around to implementing that in my release script today, although I haven't gone back and added the symlinks for all my older software. That will start happening as I release new versions, and I might go back and add the symlinks for everything later.

While I was at it, I removed support in the release script for generating and copying MD5 checksum files for tarball releases. They're pointless now that I'm always generating GnuPG signatures (and were probably pointless before that).

You can get the latest version from my scripts page.