illumos gate

The closed binaries contain CTF information which was made unique against a genunix from long ago. This has always been a problem for GCC but recent changes to types containing in genunix are sufficient to make that type information now incorrect even with studio builds.

Pending more general ways of implementing this, which suffer from other issues (see #1961) we should integrate Jason's ctfstrip, and use it during the build, as the GCC branch has been doing for a while now.

Note that the major user-visible face of this problem occurs should a type which is "damage" be a type referred to by DTrace, which will prevent the use of any DTrace consumer. It also, obviously, harms debugging since the debugger will believe the incorrect type information.