Fix cvCalcOpticalFlow when the status parameter is NULL

issue 2526
adds desktop java junit tests
partial fix for failing tests; fix for Windows launcher script; more quiet output
more tests fixes
Increased time limit for normalize_minmax test
Increased time limits in Mat_Eye and Mat_Zeros tests
Increased time limit in HoughLines test
Made bitwise_not test mare stable
Increased number of iterations in threshold test
Dropped 720p tests
Left 5 testing sizes for WarpPerspectiveNear
Dropped 25x25 window test
Dropped tests for feature vector length=6
Dropped tests for 720p and CV_64F depth
Dropped tests for 720p and 127x61
Dropped tests for szVGA, sz720p
Dropped 1080p tests
Dropped tests for 720p and CV_64F depth
Left 3 testing sizes: (640,480),(1920,1080),(2592,1944)
Dropped tests for CV32SC4