Adding WarpImageFilter

Change-Id: I065c2b78936fd8812cbdceb0edb3b8464060d668
Merge branch 'SIMPLEITK-432_UpdateToITK4.5' into SIMPLEITK-433_AddWarpImageFilter

Change-Id: I0ce6bb907f2e9392a54e556528c64108816d7493
To find data file search source tree after external data.

Change-Id: Id4185043da9528ce191fe18126b11259949891d8
Adding basic test for warp image filter

Change-Id: Ide2eb847354af476e3083ee29ef6b4a171e3e273
Adding support for vector image source image for warp filter.

Updating dual dispatch template to support only one vector by
component input.

Change-Id: Ib041047955a573b079804ea4a7da3642f230894e
Adding test for vector image for warp filter

Change-Id: I3b599549c072bd2d982f45e5a3e718cb4a242674
Moving ITK version along to 4.5 with new bug fixes

Change-Id: I6b6854985c41e869eec3652f215e3d9866dd808e
Separating sitkImage.cxx for compilation performance

Keep the non-templated code in sitkImage.cxx, separate the template
functions into sitkImage.hxx, and explicitly instantiate them in
sitkImageExplicit.cxx.

Change-Id: Iff9fa085062832c03f9b157e034e6fd97bd07e9d
Adding access methods to image's meta-data dictionary

Change-Id: Ic7d85f125ad84907526e37645440231e97d08e02
Adding LabelVoting and CyclicShift filters

Change-Id: I7197579c08719a8f7aa06583feead52a53176f91
Use integer type for unused pixel type

This filter only operates on unsigned integer so a double is not
needed.

Change-Id: I8d70437b5c0cc76f253236376f5b259367af2b9a
Updating ITK superbuild version to input LabelVoting fix

Change-Id: I4398cda37fc00647e661f1a1f21b3fb1100277d5
Adding test for image's metadata dictionary

Change-Id: Iec7495c2ee6f9927c7aaa22ab816928d7f83b275
Merge topic 'SIMPLEITK-432_UpdateToITK4.5'

09ec23f Updating ITK superbuild version to input LabelVoting fix
d65ce5a Moving ITK version along to 4.5 with new bug fixes
Merge topic 'SIMPLEITK-435_AddMetaDataDictionaryAccess'

00461ac Adding test for image's metadata dictionary
1a3025f Adding access methods to image's meta-data dictionary
3cf4d8a Separating sitkImage.cxx for compilation performance
Merge topic 'SIMPLEITK-433_AddWarpImageFilter'

2438f46 Adding test for vector image for warp filter
1f57166 Adding support for vector image source image for warp filter.
6312b66 Adding basic test for warp image filter
814e073 To find data file search source tree after external data.
2124425 Merge branch 'SIMPLEITK-432_UpdateToITK4.5' into SIMPLEITK-433_AddWarpImageFilter
0d3f327 Adding WarpImageFilter
Merge topic 'SIMPLEITK-347_WrapSomeMoreFilters'

f32df5d Use integer type for unused pixel type
37cafdf Adding LabelVoting and CyclicShift filters