STYLE: Fix typo in comment associated with scripted loadable extension template

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21719 3bd1e089-480b-0410-8dfb-8563597acbee
STYLE: Fix indent

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21720 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: Ensure ITKv4 IO Factory are registered within tests

* Include directories associated with ITKFactoryRegistration are also
appended to ITK_INLCUDE_DIRS to ensure that the method itk::itkFactoryRegistration
could be called.

* Code allowing to register the factory has been manually added to the
tests.

* Would it make sens to have this library ITKFactoryIORegistration
being built/provided by ITKv4 proper ?

See #2813 - http://www.na-mic.org/Bug/view.php?id=2813
See #2951 - http://www.na-mic.org/Bug/view.php?id=2951

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21721 3bd1e089-480b-0410-8dfb-8563597acbee
COMP: Remove build system option related to ChangeTracker

Follow up of commit r21716

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21722 3bd1e089-480b-0410-8dfb-8563597acbee