[dev] vfs_sql fix and new vfs driver

[Chuck Hagenbuch]

Quoting Mike Varghese <mike.varghese@ascellatech.com>:

> I fixed vfs_sql driver to recursively rename all child folder and file
> paths if a parent folder is renamed.
> 
> I have also submitted a new driver for the VFS.  This driver combines the
> local file system driver and the sql driver.  The directory structure is 
> stored on the SQL database, but the actual files are stored on the local 
> file system.  If there are any questions, please email me.

All committed, thanks!

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"After a few minutes the most aromatic and nice smelling Italian coffee 
 will come out of the exhaustpipe." - Our stove-top espresso pot