K 10
svn:author
V 2
ed
K 8
svn:date
V 27
2012-08-28T18:33:12.245204Z
K 7
svn:log
V 441
Use a proper destructor function.

When calling a revoke(2) on a dtrace device, dtrace_close() could be
called, even if threads are still stuck in the device. Defer the actual
deallocation of datastructures to the cdevpriv destructor.

While there, remove the unneeded D_TRACKCLOSE and D_NEEDMINOR flags. For
the helper device, we never need it. For the regular dtrace devices, we
only need these flags on FreeBSD pre-8.

MFC after:	1 month

END