cygthread::cygthread() hang

[Joe Buehler]

It might be better to eliminate the cygthread::new() method and switch
to a factory method.  Gcc actually generates two different cygthread
constructor functions, and this confuses gdb -- there are two different
functions being generated from the same source lines.  I of course
needed a break in the second function, and gdb picked the first...
-- 
Joe Buehler