* Added flag handlers for imread and imdecode | Issue 16203

Undo imread change

Added Imread resize tests

Added imdecode flags check

Added imdecode tests for resize

Removed trailing whitespace

Removed IMREAD_IGNORE_ORIENTATION check

Added else condition

Removed IMREAD_IGNORE_ORIENTATION check in decode

Added HAVE_JPEG guards

Added static_cast for Win32

Added resize for non jpegs

Added tests for non jpeg resize case

Fixed resize value in assert

Changed tests to Value-Parameterized Tests

Changed tests to Value-Parameterized Tests | handled >> in cpp

Changed tests to Value-Parameterized Tests | removed trailing whitespace

* imgcodecs: update test

Vectorize minMaxIdx functions

* Updated documentation and intrinsic tests for v_reduce

* Add other files back in from the forced push

* Prevent an constant overflow with v_reduce for int8 type

* Another alternative to fix constant overflow warning.

* Fix another compiler warning.

* Update comments and change comparison form to be consistent with other vectorized loops.

* Change return type of v_reduce_min & max for v_uint8 and v_uint16 to be same as lane type.

* Cast v_reduce functions to int to avoid overflow. Reduce number of parameters in MINMAXIDX_REDUCE macro.

* Restore cast type for v_reduce_min & max to LaneType

* add a wrapper for getAvailableTargets

* add java wrapper on Target enum

backporting of commit 4057e81b

gcc 10+ has renamed this option, therefore check for gcc version before
deciding which name to use for opt parameter
Signed-off-by: Khem Raj <raj.khem@gmail.com>

support eltwise sum with different number of input channels in CUDA backend

* add shortcut primitive

* add offsets in shortcut kernel

* skip tests involving more than two inputs

* remove redundant modulus operation

* support multiple inputs

* remove whole file indentation

* skip acc in0 trunc test if weighted

* use shortcut iff channels are unequal