similar change to the setsockopt1.c one: use the resolution of the monotonic
clock from clock_getres(). while here use a different port when binding.

ops. compare against the socket timeout, not the alarm one.
sometimes these tests are incorrectly marked as failing (ktrace shows
the read is returning within the specified timeout) but there are oth

ops. compare against the socket timeout, not the alarm one.
sometimes these tests are incorrectly marked as failing (ktrace shows
the read is returning within the specified timeout) but there are other
times where they're taking slightly longer than expected.
for now both cases are marked as failure.

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fix tests.

better output on error.

Use CHECKx macro and enable setsockopt tests.

Add tests to check timeout on sockets under different situations. kurt@ ok.