* fixes arg handling
* adds -h support
* builds html and texinfo docs and puts them in the right place
* puts the resulting tarball and any work done in a tmp/ directory
* fixes messages so it tells you what it's doing
This tweaks maketarball.sh so that it takes a -d argument which adds
the date to the filename and parent directory.
Also, this changes maketarball.sh so it requires a rev-ish--no more
"by default, grabs master".
