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
Merge branch 'master' into next

Change-Id: Ib72d74ae4fbc4777a244259270bd44f39343f24a