Must have that flag. Otherwise following "doxygen overview" tutorial won't work.

- V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT
- V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH

declaration order is not fixed

Error message:
Core.java:97: error: illegal forward reference
    Hamming_normType = NORM_HAMMING,

- better handling of enum arguments
- less merge conflicts

- added more debug checks

- can be enable separately if needed
- not stable (due storage I/O processing)

* Enabled -Wnarrowing warning

* Fixed type narrowing issues

* Cast python constants

* Use long long for python constants

* Use int for python constants with fallback to long

* Update cv2.cpp