- 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

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

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

Add ftp4.se.freebsd.org to the IPv4 and IPv6 mirror lists.

PR: 157210, 157211
Submitted by: Niclas Zeising <zeising@lysator.liu.se>
Approved by: re (kib)

Fix a syntax error in a little-used function.
Replace expr with $(())
Replace grep > /dev/null with grep -q
Replace "$?" = "0" with $? -eq 0 in tests
Consolidate export statements with variable assignment
Replace tests for ! -z with -n

Approved by: kib (mentor)

Indent things consistently

PR: 149926
Submitted by: John Hixson

Various updates to support new pc-sysinstall directive
"installPackages" that will install packages and all package
dependencies.

PR: 148606
Submitted by: John Hixon

Add support for packages.

PR: 148584
Submitted by: John Hixon

Update pc-sysinstall to output list of FTP mirrors as well as some
installation information. Export architecture to install.

PR: 148184
Submitted by: John Hixson