point to zmanda's github repo
* index.php, download.php: Update for amanda-2.6.1b2 release.
reorganize, fix typos, add git, and remove some older 'development' versions
add missing word
projects should plural for the sourceforge link. No idea when this broke.
* download.php: Fix.
download.php: new amanda-261 branch, trunk is 2.6.2alpha
2.6.1b1 release
* download.php, index.php: New 2.6.0p2 release.
more HTML fixes