Added option cropFrames to repeatability test. Some bugfixes.
Added option cropFrames to repeatability test. Some bugfixes.

andersbll/vlbenchmarks,andersbll/vlbenchmarks,CVML/vlbenchmarks,andersbll/vlbenchmarks,vlfeat/vlbenchmarks,vlfeat/vlbenchmarks,CVML/vlbenchmarks,vlfeat/vlbenchmarks,CVML/vlbenchmarks,andersbll/vlbenchmarks