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

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

Backport bmake to 9 so ports can rely on it being available.
We only build/install it as bmake.

Requested by: bapt
Reviewed by: marcel

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

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

Stick to traditional DEFAULT_SYS_PATH (/usr/share/mk)

Reviewed by: obrien
Approved by: re

Merge bmake-20130904

ParseGetLine: don't treat a zero byte as end of buffer if P_end says it isn't.
Consume up to next newline, and issue a parse warning.
If no newline found before P_end, carry on as before.

Merge bmake-20130730
Main feature of interest is .MAKE.JOB.PREFIX=
to suppress --- job --- tokens.

Update to bmake-20130604 to fix file descriptor leak.

Sync with upstream version (20130520) that includes same fixes made last week.

Update to bmake-20130330

Merge bmake-20130123

Approved by: marcel (mentor)

Merge bmake-20121111
Also pay attention to MK_SHARED_TOOLCHAIN.

Approved by: marcel (mentor)

Merge bmake-20121010

Approved by: marcel (mentor)

Fix a bootstrapping problem where the first bmake (built by FreeBSD's
make) ended up being built with -DFORCE_MACHINE. This broke the lib32
built for amd64 & powerpc64.
This fix is comes with the next import of bmake, but is committed here
and now to minimize the exposure to the bug.

Submitted by: Simon Gerraty <sjg@juniper.net>

Add bmake to the build and allow it to be installed as make(1) instead
of FreeBSD's make by setting WITH_BMAKE. The WITH_BMAKE build makes it
easy for people to switch while working out the kinks -- think ports
tree here. The option will be removed in due time.

Submitted by: Simon Gerraty (sjg@juniper.net)