interval instead of assuming that there are exactly 1000 real-time-clock
milliseconds per second! On some ports when running under qemu, there
can be twice as many RTC milliseconds as expected.
This is part 2 of the changes required to make the libevent tests work
on port-amd64 under qemu.
even when running under qemu on platforms with a clock-skew problem.
The original 3-second timer was intended to be "longer than the http
timeout" (which is 2 seconds), and the updated 5-second value still meets
this requirement. The updated value also meets the requirement even when
the http timeout stretches to 4-seconds under qemu.
This is part 1 of getting the libevent tests working on port-amd64 with
qemu.
