Add zfs module.
Need extraModulePackages for spl and zfs modules.
Add the hostid option. Refactor code a bit better for initrd(untested) and system operation.
spl module params in boot.spl.*
Support driSupport32Bit for nvidia legacy 304.

I need this for steam to work with some older cards.
Merge remote-tracking branch 'upstream/master'
Fix (and simplify) the blcr module.
Add boot.initrd.compressor option
Merge pull request #70 from cpages/master

Support driSupport32Bit for nvidia legacy 304
Merge pull request #86 from maggesi/blcr-updates

blcr module: fix (and simplify)
Merge pull request #53 from jcumming/zfs.121204

add a zfs module