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

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

MFC: 232889

Make sure when creating new MBR partition it is set to active by default.

Submitted by: kmoore
Obtained from: PC-BSD

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

Approved by: re (implicit)

Fix a logic bug in pc-sysinstall creating partitions.
Improve exit when an error occurs.
Fix parsing to grab values which contain extra '=' signs.
Fix a bug setting the timezone properly.
Fix a usage bug when setting up with gmirror.
Allow a uzip file from local media to be used.
Allow specifying flags for "newfs" when using UFS as the file system.
Run custom commands after doing final cleanup / fstab generation
and such. Also fix using relative path for config file.

Approved by: re (bz)

Check in two missing files missed in cleanup.
Change expr to $(())
Switch test from "$?" = "0" to $? -eq 0

Approved by: kib (mentor)

Add support to pc-sysinstall's create-part feature, to create non MBR type partitions,
such as GPT and others.

PR: bin/154684
Submitted by: kmoore
Approved by: kib (mentor, implicit)

Spell iXsystems, Inc properly

Submitted by: delphij@

We need to install the shell scripts as executables rather than as
data files in the backend* trees.

Submitted by: John Hixon

Bring in Kris Moore's pc-sysinstall shell script from PC-BSD. This
shell script is the back end logic necessary for an installer. It
contains both query routines to allow a front-end installer to present
reasonable choices to the user and also action routines which allow
the front end installer to put a FreeBSD distribution onto a disk. It
supports installing onto the usual suspects, as well as advanced
features like Mirroring, ZFS, Encryprion and GPT labels.

While this is only the back-end of the installer, it can do unattended
scripted installations. In PC-BSD's world view, all installations are
scripted and all the front-end does is write the script. As such, it
is useful in its own right.

This has been extensively tested over the past several releases of
PC-BSD. However, differences between that environment and FreeBSD
suggest there will be a period of shake-out while those differences
are discovered and corrected.

A text-based front-end is in the works. For the GUI-based front-end,
you can use the PC-BSD distribution.

Kris' BSDcan paper on pc-sysinstall is linked off his talk on the
BSDcan site:
http://www.bsdcan.org/2010/schedule/events/173.en.html

The man page is written by Josh Paetzel, and I wrote the Makefiles for
the FreeBSD integration. Kris wrote the rest.

This represents version r7010 in the PC-BSD repo.
http://svn.pcbsd.org/pcbsd/current/pc-sysinstall

Submitted by: kris@
Sponsored by: iX Systems