patch to fix SMP vkernel reboots

[Matthew Dillon]

:Joerg Sonnenberger wrote:
:> Ideally this dance would not be necessary as exec is supposed to kill
:> all LWPs.
:
:exactly.  I actually designed it to do so.  Strange.  What's exactly the problem?
:
:cheers
:  simon

    There was a glitch where the LWPs weren't being killed so I put in a sanity
    check to refuse to exec if there were other LWPs.  

    I'll get it fixed.  exec just needs to do the first part of exit1() which
    kills the other LWPs before it continues.

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>