- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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

MFC Revisions:
256549: man-page updates
256551: .Dd bump in manpage
256553: bootenv -> ROOT fix
257842: monster list of fixes
257843: minor touchup
257844: copy install log
257845: fixup to last
257872: mdoc fixup
257939: debug check
258021: MBR bootcode fixup

Reviewed by: many
Discussed on: -current
Approved by: re (hrs)

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Properly quote argument.

MFC after: 3 days

Allow WPA PSKs up to 63 characters, the max length according to
wpa_supplicant.conf(5). Up to now, the PSK was truncated
to 15 characters (the length of the input field).

PR: 159559
Submitted by: Gavin Chappell <gavin.chappell@gmail.com>
Approved by: re (kib)

Check correctly for whether there are any available wireless networks. This
was tested on a train in the middle of an upstate New York swamp.

Import bsdinstall. This is meant to be (eventually in conjunction with
pc-sysinstall) a replacement for sysinstall in the 9.0 release and beyond.
Currently supported platforms are sparc64, pc98, i386, amd64, powerpc, and
powerpc64. Integration into the build system will occur in the coming
weeks.

Merging with pc-sysinstall will use this code as a frontend, while
temporarily retaining the interactive partition editor here. This work
will be done in parallel with improvements on this code and release
integration.

Thanks to all who have provided testing and comments!