Hi,

This patches makes the bsd-kvm target register a main thread.

I've "tested" this on a x86 OpenBSD-4.3 VM, but I'm not qualified
to do much more openbsd kernel debugging other than:

 (gdb) tar kvm
 #0  0x00000006 in ?? ()
 (gdb) info threads
 * 1 <kvm>  0x00000006 in ?? ()

B.T.W, with GDB 6.3, which came with the distro I always get:

 (gdb) tar kvm
 #0  0xd034ee05 in ?? ()

With HEAD I always get 0x00000006.

Is this difference expected?  Related to the recent change to
build on 4.3?

OK?

-- 
Pedro Alves