FreeNAS Code

Use old parser again because PEAR XML parser causes some error. Think they can't be fixed because PfSense changes back to old parser after some time.

Misc code changes.

- Add code from PfSense to make Serializer compatible to the old parser.
- Refactor code.

Fix bug when writing configuration.

Change source-supfile location.

Add checkbox to update kernel sources when building kernel.

Update CHANGES file.

Use PEAR XML parser and serializer due some bugs in the origin used parser.

Improve WebGUI workflow.

Add 'Path' column displaying share path on Services/CIFS/Shares WebGUI page.