Release the processor between the mutex unlock()/lock() sequence, to give

xine_demux_stop_thread a chance to aquire the mutex, so that it can
change stream->demux_thread_running to 0.
Problem is, the demuxer thread has it's mutex blocked 99.9% of the time and
releases it only for an extremely short time, for the purpose of allowing
another thread to interrupt the demuxer.
On Solaris at least, the unlock()/lock() sequence will typically run in the
thread's allocated time slice and chances are mimimal that the demuxer
is preempted between the unlock()/lock(), which would allow another thread
to grab the mutex.

CVS patchset: 3101
CVS date: 2002/10/30 13:59:11

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