[Users] DB migration from 1.1 to 1.2

Hi, today I uploaded on SVN trunk the new logic from migrating the existing DBs from 1.1 format to 1.2. The strategy is different than in the previous version. The old "reinstall" proved to be suboptimal because of the lack of flexibility and mainly it didn't provide a smooth transition (downtime was required in order to swap the DBs, unsafe - data could be lost if error occurred during reinstall - and data could be lost because of DB changes). A new approach was chosen this time - migration. A new DB is created in parallel with the old one and data is processed and transferred into the new DB via sql commands (and nor dumps), using strict mapping between old and new columns. This way the original data is kept and complex column renaming and data processing is possible (like lcr address for example). for the moment this migration is done only for mysql, but is possible to do it for postgres also but as I'm not to much into, I will need some help from some postgres guru ;). in the mean while testing is welcomed ;) regards, bogdan