ENH: Bump the Superbuild ITK version.

Upstream ITK includes a fix from Arnaud for the ObserveEvent
test.  These was also a change in the Otsu threshold behavior, which
we need to keep the baselines consistent.

Change-Id: I8c958b1ecb45d316f6b165a00096ae1636321d79
ENH: Version in sync with ITK.

Also use the ITK conventions for the version variable names.

Change-Id: I40e1c4706dbf684199b0c755e82072f8d2f4ca18
BUG: Update ThresholdAnImageUsingOtsu baseline.

Upstream ITK corrected behavior.

Change-Id: Ie03736b74f0e0a7dd6d0858e6c090b92bd9bb128
COMP: Add compile definitions to ignore VS "secure" warnings.

Change-Id: I8ff5e02863c840326c2e2c8aa5dc2897e68dc33f
Merge topic 'Dashboard' into master

e821bee5 COMP: Add compile definitions to ignore VS "secure" warnings.
c72e2efd BUG: Update ThresholdAnImageUsingOtsu baseline.
903d8ee8 ENH: Version in sync with ITK.
56250062 ENH: Bump the Superbuild ITK version.