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This is done in one commit as split out they would leave the code
in a fairly broken state.

The, actually consistently use result of matrix read and built-in transpose to simplify code

Removes the "raw" data structures for camera calibration, not needed.
The only thing they contained beyond the revised regular structures
was derived data that the consumer might parameterize differently.

Renames t_settings_stereo to t_stereo_camera_calibration.
The calibration info is data (that could be stored on the device, etc),
not settings.

Pre-reserve, use emplace to avoid copies.
This is a combination of Ryan's patches and mine.

t/calib: performance improvements
t/calib: Fix doxygen warning
t/calib: Fix asserts and some perf enhancments