cache adapter (memcache, mysqltable) cleanup

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3262 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
mysqltable cache adapter improvements

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3263 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
build auto version (2798) ...

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3264 1f8fe7d8-47f0-464c-8d0a-336f4953ab05