Added simple script for checking all functions of all available feature extractors.
Added simple script for checking all functions of all available feature extractors.

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