MFV illumos

4474 DTrace Userland CTF Support
4475 DTrace userland Keyword
4476 DTrace tests should be better citizens
4479 pid provider types
4480 dof emulation is missing checks

MFC after: 2 weeks

This commit was generated by cvs2svn to compensate for changes in r178479,
which included commits to RCS files with non-trunk default branches.