15287 dtrace: remove pragma ident
Reviewed by: Andy Stormont <andyjstormont@gmail.com>
Pproved by: Patrick Mooney <pmooney@pfmooney.com>

6478044 dtrace assert: kaddr >= kernelbase && kaddr + size >= kaddr in dtrace_copyin()
6479887 DTRACE_INRANGE incorrectly treats testsz as a signed quantity
6479991 some err.* test cases need work