ENH: Remove unused scripts in Utilities/Dart.

These are related to Dart/CVS.

Change-Id: Iea081ceb881a47eec29df0b9aa228cd6675b1c01
BUG: Fix uninitialized variables in N4BiasFieldCorrectionImageFilter.

Detected by SimpleITK's test suite.

Change-Id: Id904b4e89593b940da26349620548f3152ad3d16
Merge topic 'Dart-dir'

4c0770c ENH: Remove unused scripts in Utilities/Dart.
Merge branch 'release'

Change-Id: Ic295002ac7429abfb55dfc6bf426706eaf9784da