Add checks for empty operands in Matrix expressions that don't check properly
* Starting to add checks for empty operands in Matrix expressions that
don't check properly.
* Adding checks and delcarations for checker functions
* Fix signatures and add checks for each class of Matrix Expr operation
* Make it catch the right exception
* Don't expose helper functions to public API
- removed tr1 usage (dropped in C++17)
- moved includes of vector/map/iostream/limits into ts.hpp
- require opencv_test + anonymous namespace (added compile check)
- fixed norm() usage (must be from cvtest::norm for checks) and other conflict functions
- added missing license headers
Conflicts:
modules/gpu/perf/perf_imgproc.cpp
Cast a long integer to double explicitly.
Conflicts:
modules/python/src2/cv2.cpp
Cast some matrix sizes to type int.
Change some vector mask types to unsigned.
Conflicts:
modules/core/src/arithm.cpp
