- 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

Fix buildworld -DNO_CLEAN when using with Perforce, which marks files as
read-only by default, meaning files copied can't be overwritten next time.

Reviewed by: imp
Approved by: ken (mentor)

Pick manpages from their original locations

Install history.3 as rlhistory.3 to not conflict with existing libedit function

Upgrade to 4.2

$Id$ -> $FreeBSD$

don't include Makefile.inc twice

upgrade to 4.0