Add descriptions of Git contributions.

The URL's are pretty pointless on a resume.  Add actual descriptions of
what the contributions were.
Add descripitions of CVSps contributions.
Add Postres to databases.
Remove Windows NT from OS list.

I have no desire to be near a Windows box ever again.  I should probably
remove Jave, too.
Add Octave to skills.
Add GTK+ to skills.
Split out libraries into new section.
Add Intel TBB to libraries.
Update profile.
Move skill after public contributions.
Add Hobson Village directory to public section.
Reformat page breaks.

Push everything after experience onto its own page, as I think that is how
it will be in the end.