* imgcodecs cmake: the option to customize supported formats list (WITH_IMGCODEC_HDR, WITH_IMGCODEC_SUNRASTER, WITH_IMGCODEC_PXM)

* imgcodecs: fixes

- fixed CMake scripts (=OFF doesn't really work)
- restore dropped GDCM block
- added _IMGCODEC_ prefix
- fixed tests
- include PAM format under WITH_IMGCODEC_PXM option

- make green Linux debug/Linux32/Win32 builders

issue 11552

Add Java and Python code for the following imgproc tutorials: Canny, Remap, threshold and threshold inRange. Use HSV colorspace instead of RGB for inRange threshold tutorial.

    __STDCALL macro change to support IPP 2018u3+ external packages
    Memory leak fix in Gaussian filter
    Improved checkers for OpenMP supported features
    Improved declarations for atomic operations.

ICV binary and package version are the same.

This avoids MSVC 19.14.26428.1 to call vectorized __vdecl_cosf4() function with less precision.

- allow 5% of changed pixels with intensity difference <= 1

Signed-off-by: Li Peng <peng.li@intel.com>

Signed-off-by: Li Peng <peng.li@intel.com>

Signed-off-by: Li Peng <peng.li@intel.com>

Signed-off-by: Li Peng <peng.li@intel.com>