- fixed lena.png extension
- fixed getTextSize wrapper
- added junit html report generation

- disabled xfeature2d dependency for java wrappers
- fixed java wrappers build after cmake rerun
- disabled opencv_ml tests temporarily
- fixed Imgproc usage in java tests

underline

sss

Added workaround for Nvidia: take into account that 3-channel vector type takes 4*elem_size in local memory.

don't discard pure virtual methods in hdr_parser.py (was broken anyway)

cv::Matx could not be converted to c::Mat automatically

As opencv_xfeatures2d is part of opencv-contrib and not opencv repository,
${OpenCV_SOURCE_DIR}/modules/modules/include is not a correct include
path - use ${opencv_xfeatures2d_SOURCE_DIR}/include instead