2018: 2018: Auto stash before merge of "dev2018" and "origin/dev2018"

app/Operations/ThresholdDialogTest.cpp

test/ref/test_8x8dct_result_barba.bmp

test/ref/test_8x8dct_result_basisDCT.bmp

test/ref/test_8x8dct_result_monarch.bmp

test/ref/test_8x8dctinverse_result_barba.bmp

test/ref/test_8x8dctinverse_result_basisDCT.bmp

test/ref/test_8x8haarTransform_result_basisHaar.bmp

test/ref/test_8x8hadamardTransform_result_basisHadamard.bmp

test/ref/test_8x8inversehaarTransform_result_basisHaar.bmp

...test_8x8inversehadamardTransform_result_basisHadamard.bmp

test/ref/test_EqualizeHistogram_result_baboon.bmp

test/ref/test_EqualizeHistogram_result_barba.bmp

test/ref/test_EqualizeHistogram_result_imao1.bmp

test/ref/test_MedianFilter_square_3_barbaNoise.bmp

test/ref/test_combineRGB_result_Parrots.bmp

test/ref/test_filter_result_lightblack_black_uniform.bmp

...est_filter_result_lightblack_circular_squarelaplacian.bmp

.../ref/test_filter_result_lightblack_replicate_gaussian.bmp

.../ref/test_filter_result_lightblack_symmetric_gaussian.bmp

test/ref/test_flip_result_cdm_horizontal.bmp