MT safe exception diffs

[Teemu Torma]

    From:  John Carr <jfc@MIT.EDU>
    Date:  Mon, 29 Sep 1997 09:38:18 EDT

    You only need one version of the exception library: Solaris threads
    and pthreads are compatible.  If libgcc uses threads and the program
    uses pthreads it will still work.  If you want to support Solaris 2.4
    you should use -lthreads in libgcc, otherwise use the one that has the
    features you want.
    
I am aware of that, but I implemented both ones to be able to test 
the pthreads interface.  

Teemu