i#7044 hang: Sleep on wait in parallel drmemtrace analyzer #7054
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Adds a 1ms sleep on a STATUS_WAIT in the drmemtrace analyzer when operating in parallel. This avoids costly spinning in replay mode. Adding targeted condition variables inside the scheduler doesn't end up performing any better and is complicated by the scheduler not knowing the threading model of the user, so this is a safer and simpler solution despite not waiting on an event.
Tested on a medium-large internal trace where the spinning makes replaying as-traced take 7:35; with the sleep it takes 1:15.
Fixes #7044