sys: Remove $FreeBSD$: one-line .c comment pattern

Remove /^/[*/]\s*\$FreeBSD\$.*\n/

isp: Remove a double word in the driver manual

- s/to to/to/

MFC after: 3 days

Update several more URLs

- Primarily http -> https
- Primarily FreeBSD project URLs

sys/dev: minor spelling fixes.

Most affect comments, very few have user-visible effects.

- add a missing "be" and "in"
- fix other errors introduced when committing r226436
- add 'function' to a sentence where it makes sense

Submitted by: delphij
Submitted by: dougb
Submitted by: jhb
Approved by: dougb
Approved by: jhb

- change "is is" to "is" or "it is"
- change "the the" to "the"

Approved by: lstewart
Approved by: sahil (mentor)
MFC after: 3 days

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

- Import the HEAD csup code which is the basis for the cvsmode work.

Add some somewhat vague documentation for this driver and a list
of Hardware that might, in fact, work.