literal name_enable wherever possible, and ${name}_enable
when it's not, to prepare for the demise of set_rcvar().
In cases where I had to hand-edit unusual instances also
modify formatting slightly to be more uniform (and in
some cases, correct). This includes adding some $FreeBSD$
tags, and most importantly moving rcvar= to right after
name= so it's clear that one is derived from the other.
Port author is Stacey D. Son. Two additional patches are added:
- a patch to fix build on FreeBSD 7 and later [1]
- a patch to fix device detection >2TB [2]
Submitted by: pluknet [1], fjoe [2]
Tested by: George Mamalakis
