First step in two-part process to rename directories to kallithea.
This first step is to change all references in the files where they refer
to the old directory name.

synced vcs with upstream

- moved subprocessio module to VCS
- many small changes to make embedded vcs as similar to to external lib
- use only absolute imports
- patch vcs config during load pylons env

Fixed tests for new i18n changes
- added new test for age function
- added new Contributor to RhodeCode

Mysql fixes
- force INNODB engine
- set utf8 charset
- fix convert_unicode flag in .ini files
- fix constraints and FK

commit less models
- models don't do any commits(with few exceptions)
- all db transactions should be handled by higher level modules like controllers, celery tasks

- refactoring to overcome poor usage of global pylons config
- db transaction fixes
- fixed tests
- garden