Revert "Changed histogram binning logic"

[jessemapel]

Reverts #3918

This is being reverted because it caused significant change in the app test outputs and more time it needed to check that it did not break anything. When, all of the changes are signed off on, it can be merged back in.

[jessemapel]

Here are the failures:

The following tests FAILED:
     45 - isis3_unit_test_Cube (Failed)
     74 - isis3_unit_test_GaussianStretch (Failed)
     88 - isis3_unit_test_Histogram (Failed)
    203 - isis3_unit_test_ProgramLauncher (Failed)
    273 - isis3_unit_test_Stretch (Failed)
Errors while running CTest

The following tests FAILED:
    464 - decorstretch_app_test_default (Failed)
    555 - gaussstretch_app_test_default (Failed)
    585 - hist_app_test_default (Failed)
    586 - histeq_app_test_test (Failed)
    587 - histmatch_app_test_cdf (Failed)
    588 - histmatch_app_test_mode (Failed)
    596 - isis2fits_app_test_8bit (Failed)
    600 - isis2fits_app_test_multiBand (Failed)
    602 - isis2fits_app_test_signed16 (Failed)
    610 - isis2pds_app_test_linear (Failed)
    619 - isis2raw_app_test_8bit (Failed)
    622 - isis2raw_app_test_default (Failed)
    623 - isis2raw_app_test_defaultBIL (Failed)
    624 - isis2raw_app_test_defaultBIP (Failed)
    628 - isis2raw_app_test_multiBand (Failed)
    629 - isis2raw_app_test_multiBandBIL (Failed)
    634 - isis2raw_app_test_signed16 (Failed)
    636 - isis2raw_app_test_signed16BIP (Failed)
    637 - isis2raw_app_test_u16bit (Failed)
    643 - isis2std_app_test_jpeg2000 (Failed)
    645 - isis2std_app_test_tiff (Failed)
    768 - percent_app_test_case01_99 (Failed)
    769 - percent_app_test_case02_50 (Failed)
    770 - percent_app_test_case03_.1 (Failed)
    771 - percent_app_test_case04_mult (Failed)
    772 - phocube_app_test_allbands (Failed)
    829 - rgb2hsv_app_test_auto (Failed)
    897 - stats_app_test_default (Failed)
    898 - stats_app_test_format (Failed)
    955 - cnethist_app_test_case01 (Failed)
    996 - findfeatures_app_test_controlnet (Failed)
    997 - findfeatures_app_test_debug (Failed)
    999 - findfeatures_app_test_geom (Failed)
    1001 - findfeatures_app_test_messenger (Failed)
    1002 - findfeatures_app_test_multialgo (Failed)
    1003 - findfeatures_app_test_multialgofilter (Failed)
    1081 - apollopanstitcher_app_test_default (Failed)
    1288 - mdis2pds_app_test_minMaxPercent (Failed)
    1369 - hideal2pds_app_test_croppedAlphaCube (Failed)
    1390 - hijitter_app_test_default (Failed)
    1391 - hijitter_app_test_withCrop (Failed)
    1394 - hinoise_app_test_binningIsOne (Failed)
    1395 - hinoise_app_test_binningNotOne (Failed)
    1399 - hirdrgen_app_test_red (Failed)
    1400 - hirdrgen_app_test_red2 (Failed)
Errors while running CTest

The following tests FAILED:
    1469 - osirisrex_module_test_mapcam (Failed)
Errors while running CTest

The following tests FAILED:
    1613 - ThreeImageNetwork.FunctionalTestFindImageOverlapsNoOverlap (Child aborted)
    1960 - stats_MockHist.TestStats (Failed)
Errors while running CTest

Many of these are actually not failures and just differences in how we compute histogram stretches due to the bug in the histogram bin computation.