Adding validation data for v_stockman2xyz

Signed-off-by: David Brainard <brainard@psych.upenn.edu>
Updating a little

Signed-off-by: David Brainard <brainard@psych.upenn.edu>
Added mackay case back into v_sceneExamples.

Signed-off-by: David Brainard <brainard@psych.upenn.edu>
Merge branch 'dev' of https://github.com/isetbio/isetbio into dev

Signed-off-by: David Brainard <brainard@psych.upenn.edu>

Conflicts:
	validation/validationData/color/v_stockman2xyz_FastGroundTruthDataHistory.mat
	validation/validationData/color/v_stockman2xyz_FullGroundTruthDataHistory.mat