Editing UfoCameraTest150422

== Performance == Measured with the setup from 10/04/2015 and a recent [https://github.com/ufo-kit/libuca/commit/4ec7d39fb87c0fe798212e03e1fb6441aa4d3296 libuca 4ec7d]. The WG1220 signal generator was set to 200 Hz and (generally) the acquired number of frames to 1000. * **10 bit mode**. Software and external trigger modes only work up to 150 to 200 acquired frames, after that software and external modes utilize 0% and 100% CPU respectively {{{ $ uca-benchmark --num-runs=1 --num-frames=1000 ufo [ sync ] [ auto ] 59.26 Hz 474.07 MB/s }}} * **12 bit mode** {{{ $ uca-benchmark --test-software --test-external --num-runs=1 --num-frames=1000 ufo [ sync ] [ auto ] 15.39 Hz 123.09 MB/s [ sync ] [ software ] 25.10 Hz 200.79 MB/s [ sync ] [ external ] 32.82 Hz 262.57 MB/s }}} * With both 10 and 12 bit modes, asynchronous streaming does not work work.