Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Set magic fbsd:nokeywords property that allows files to bypass
keyword expansion. (file-specific replacement for CVSROOT/exclude)

Another update for reality: "dangerously dedicated" mode is now
achieved by hitting 'F', which is no longer undocumented.

PR: bin/92533
Submitted by: Rudolf Cejka <cejkar at fit.vutbr dot cz>

Bring these files somewhat into the present.
Perform some rewording while here.

Remove register.hlp, since the code that deals with it was removed
nearly 7 years ago.

Document (with warnings) the otherwise undocumented `F' command.

MFS.

This is a patch that makes some of the "partitions" --> "slice" to be
more consistant in our use of the terms for differentiation between PC
partitions and traditional BSD partitions.

Submitted-By: obrien@cs.ucdavis.edu (David O'Brien)

Fix some spelling errors.

Jordan, I'll let you merge this into 2.2o that I don't
stomp on you.

make note of which /etc files need upgrading in installUpgrade rather
than asking the user to keep track of the list himself.

Syncronize my tree so Eric can access the latest code.

Update the -current sources from the 2.1 branch.

Approved (in spirit) by: jkh

This mega-commit brings in Jordan's latest sysinstall version..
This looks like it was developed offline, and is being spammed over the
top of the existing. "That's fine by me! I dont really care how you do
it, just get it in there..." said Jordan in a conversation a short while
ago...