To add FoF as pre-installed library

The pull request includes library files, manifest, modified mysql and postgresql (not sqlazure) files to install Joomla and FoF as a pre-installed library.

The final installation has no difference with a Joomla + FoF installation.

PD: I'm assuming the FoF files are not going to be modified to avoid any conflict with the regular FoF distribution.

Regards,
Anibal