FreeNAS Code

If one tries to do an install, then reinstall again without booting FreeNAS once, then upgrade will barf because hostid hasn't been copied over.

Whether or not hostid has been generated is a more legitimate reason for qualifying a fresh install or an upgrade than just the factory config database.

Revert r8624 and r8625 because these are apparently undocumented user convenience methods for planting super seekret modules into an install and maintaining across upgrades (at the cost of you having to upgrade stuff between different majors versions).

Remove hacks required for early development dealing with preservation of modules and fusion I/O utilties.

There are a variety of undesirable scenarios that overcomplicate how things are done by keeping a simple blind replace methodology, in particular with removed modules and utilties that might not be compatible with different versions of FreeBSD.

Generate variables via the build instead of hardcoding in yet one more spot.

All that remains is that the data can be generated from /etc/version instead of /etc/version-info, similar to how notifier, system/forms, etc do it. Simple as that...

Pass the width and height parameters to dialog(1) so it actually fails with a prompt instead of flashing the usage message across the screen in the event that an install failed.

It's 8.1, not 8.0.1.

Remove all references to loader.user. This is going to be implemented in a more manageable way via the GUI.

Fix a missing unmount I must have deleted by accident.

Improve install.sh, following up on the branding work done earlier.

The version and branding info is hardcoded here as well as nano_env, but that will soon change.

- Commit more loader.user WIP code.
- Preserve permissions of copied files.
- Use case builtin instead of echo | egrep equivalent.
- Whitespace.