Switch to hand-rolled packaging/distro scripts
Several bikeshed reasons brought me to this point:
* I like the README.html layout more than any default index.html
even if it's using README content. Having links on the side
helps navigation IMHO.
* publish_docs preserves timestamps to improve cache hit rate
* git is used to maintain the manifest at packaging/release-time
so my changesets have less noise in them
* git is used to generate history files (from tag messages),
this is a more DRY approach to me.
* I don't like the ".txt" suffix being translated to "_txt.html" in
URLs. I don't like the ".txt" suffix in general.
* I don't like Manifest.txt showing up in my RDoc