Added a test that should have spot lacking destructors
Added a test that should have spot lacking destructors

Unfortunately it did not... I managed to spot in in mersenne run only.
But I still commit it, may be it will spot some other bug in the
future...

Lupus/libevfibers,Lupus/libevfibers,JohnPJenkins/libevfibers,JohnPJenkins/libevfibers,JohnPJenkins/libevfibers,Lupus/libevfibers