Replay: state teardown / restore is now avoided when benchmark mode is used in conjunction with loop_frame / loop_len / loop_count
* In order to be able to loop and maintain correctness, voglreplay would take a snapshot at the beginning of the series of frames to loop and then teardown / restore that state when the specified number of frames had elapsed. The state teardown/restore adds significant overhead (~.48 seconds each time) to each loop, and thus should be avoided in benchmark mode when the desire is to replay as fast as possible.
* The --allow_state_teardown cmdline option can be used to re-enable this functionality, as there are several cases where such behavior is necessary.
merge