Remove usage of pthread_cond_timedwait_monotonic_np.

Replaced with the posix compliant pthread_condattr_setclock.
Unfortunately, mac OS doesn't support CLOCK_MONOTONIC
or (pthread_condattr_setclock) so we fall back to using
the "default" pthread_condattr_t value like we did earlier.

Change-Id: I23475ef0d4e392d9e14402c6b5f8f658c5ed4063
Merge "Remove usage of pthread_cond_timedwait_monotonic_np."
Merge branch 'gnu_linux_x86' of https://github.com/DroidSim/platform_dalvik into gnu_linux_x86