added version to memcache for 2.2
Merge pull request #265 from cjemagid/2.2

added version to memcache for 2.2
disabled versioned cache when requiesting for vf2
Merge pull request #266 from cjemagid/2.2

disabled versioned cache when requiesting for vf2
don't read from dbw just because we're doing a refresh=1
Merge pull request #267 from will123195/2.2

don't read from dbw just because we're doing a refresh=1
use mem()
Merge pull request #268 from will123195/2.2

use mem()
Update class.Model.php

revert recent changes
Merge pull request #269 from will123195/2.2

undo recent force_db changes