FreeNAS Code

Add "trap : 18" make sure the user can't access rootshell by pressing Ctrl-Z

Thanks to wozmaz
Ref: https://sourceforge.net/apps/phpbb/freenas/viewtopic.php?f=18&t=5883

Add note "Partition type MBR" on rc.initial.install(2,3) on trunk, 0.7 & 0.69

Use printf on rc.firmware to format the output.

Use printf on rc.initial to format the Console Menu.

Create new branch for 0.7 experimental from /trunk.