stale by replacing loop counters with timeouts. In this way the
main loop of the test will be allowed to run up to 30 seconds on
any platform before aborting it.
test hanging and actually is an indication that there's a condition that is
not being properly handled at some point in the library.
Loop counter limits might need to be further increased on false positives.
would crash if a bad function sequence was used when shutting down after
using the multi interface (i.e using easy_cleanup after multi_cleanup) so
precautions have been added to make sure it doesn't any more - test case 529
was added to verify.
