ENH: Update SimpleITK

$ git shortlog 57e6a52..1fe2f56 --no-merges
Bradley Lowekamp (47):
Adding preliminary displacement transform interface
Adding additional PimpleTransform method for SetIdentity
Adding MakeUnique before set methods are called
Implementing Setting of smoothing parameters and interpolators
COMP: Default template arguments cannot be used with function
Fix incorrect argument place holder for DisplacementTrasform functor
Fix typeo in name of internal function
WIP: hacking at displacement example
Add documentation note for the GetDisplacementField methods
Adding comprehensive testing for displacement field transform
adding testing for setting interpolator for displacement field
Adding testing for transformation of point by displacement field
Adding initial implementation of ImageSeriesWriter
Adding testing for ImageSeriesWriter class
Fix up documentation for image series writer.
BUG: Move show in example to conditional block
DOC: Improving docs in internal transform class
Suppress warning about sprintf warning in image series writer.
Update ITK superbuild version to 4.7.0+
Don't always display with Displacement examples
Reduce tolerance for RMS
Fix leaking of DisplacementField Pimples
Adding accessors for global physical tolerance of images
Update ITK Superbuild version along ITK 4.7 release branch
Fix Doxygen warnings in Command page
Fix clang warning in lua
BUG: Disable SimpleITKExamples Superbuild project with flag
Rename MakeUniqueForWrite to MakeUnique
Change MakeUnique's access-specifier to public
Improve ImageRegistrationMethod::SetInitialRegistration copy handling
Adding testing for new const argument SetInitialTransform method
Adding implementation of the ScaleTransform
Adding comprehensive testing for the ScaleTransform class
improve style in translation transform
Fixing indenting
Moving implementation from header file
Remove unneeded conditional
Rename r variable to avoid CMP0054 warning
Updating Java an Python DocStrings
Updating superbuild along ITK v4.7.0 release branch
Updating Scalar transforms to expect fixed parameters
Adding SetMatrix method to Transform classes
Adding testing for the SetMatrix methods
Change matrix to pi/2 rotation
Adding GetName for SimpleITK class
Include SimpleITK class type in transform ToString
Adding testing for GetName via ToString methods

Jean-Christophe Fillion-Robin (1):
Simplify if() conditions on check result variables

Matt McCormick (1):
ENH: Update doxygen.config for Doxygen version 1.8.9.1.

Ziv Yaniv (1):
BUG: default translation vector corrected from 3D to 2D

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23959 3bd1e089-480b-0410-8dfb-8563597acbee