merge a new version of the CDDL dtrace and ZFS code.
this changes the upstream vendor from OpenSolaris to FreeBSD,
and this version is based on FreeBSD svn r315983.

in addition to the 10 years of im

merge a new version of the CDDL dtrace and ZFS code.
this changes the upstream vendor from OpenSolaris to FreeBSD,
and this version is based on FreeBSD svn r315983.

in addition to the 10 years of improvements from upstream,
this version also has these NetBSD-specific enhancements:
- dtrace FBT probes can now be placed in kernel modules.
- ZFS now supports mmap().

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Fix a typo: s/intepretation/interpretation

Change section number from 1M to 1
The man page gets installed in section 1 anyway.

Ok christos, mrg

Import the rest of Opensolaris 20081117 needed for DTrace. No conflicts
with ZFS.