* fix #9720

* Add regression test

* Fix calculation method for scale

* Add Python support for error message handlers.

* Move the static variable to the only function that uses it.

* Remove the optional param (user data), since this can already be handled by closures.

* Correct the help string.

* python: added redirectError test

project is not active anymore

Fix overflow bugs in conversion from NV12 VA-surface/D3D11texture2D to OpenCL UMat

* fix cv::imwrite to allow cv::UMat and vectors of it to be written

* cv::imwrite failure handling improvements

* Unit test for regression testing imwrite support for and fix whitespace

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