MFC: enable parallel build of toolchain/libraries/headers


git-svn-id: svn://svn.freebsd.org/base/stable/9@250596 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
MFC r249200: Correct the path.

PR:		176256


git-svn-id: svn://svn.freebsd.org/base/stable/9@250597 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
MFC r247329, r247836:
Add support for good old 8192Hz profiling clock to software PMC.
Add a generic way to call per event allocate / release function.


git-svn-id: svn://svn.freebsd.org/base/stable/9@250600 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
MFC:	r248479

List TrackPoint device before generic model.


git-svn-id: svn://svn.freebsd.org/base/stable/9@250610 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Merge remote-tracking branch 'upstream/svn_stable_9' into svn_stable_9