Ubuntu One syncdaemon improvements for Ubuntu

Improvements to Ubuntu One's file syncdaemon, which includes: * Making uploads of many files faster * Allow files to resume uploading after syncing is interrupted * Magic uploads (be more efficient with copying files)

Ubuntu One file sync infrastructure changes for Ubuntu

Infrastructure changes inside Ubuntu One during maverick, and what they mean (proxy server support, improve performance, file-level sharing, file and folder tracking, undelete, generations)