[PATCH] Fix debugger attach for threads

[Thomas Pfaff]

This patch allows a debugger to attach when an exception occurs in a 
thread other than the mainthread.

I am not happy about the wait in handle_exceptions, but it works on my 
machine. I think that a waitloop until the debugger is attached is 
cleaner, but there must be a reason why the debbugging loop is 
implemented this way.

Thomas

003-10-31  Thomas Pfaff  <tpfaff@gmx.net>

	* exceptions.cc (try_to_debug): Suspend/resume all threads when
	a debugger is attaching.
	(handle_exceptions): Give debugger CPU time to attach.

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