Misc. improvements
Moved features over to the Packages/Features directory. Only 'web' is installed.
Only 'Runners' will migrate the results database. All other modes will only connect.
Feature specific command line options possible.
Feature initialisation hooks (init.rb).
Got rid of the vcs_repos table. It wasnot being used anyway.
More powerful package handling.
Removed 'oracle' support.
Added sqlserver support.
Lots of tiny framework tweaks.