ENH: Added StatisticsRelabelImageFilterTest to testing

The itkStatisticsRelabelImageFilterTest1.cxx file has been included in the
/Modules/Filtering/LabelMap/test/CMakeLists.txt so that it can actually be
tested. A fix has been applied to the file since the feature input was not
being set. The necessary test images are also being included. Compiles and
runs fine under Windows 7, Visual Studio 10.

Change-Id: I042c8620e0cc8dde395330924fe53a20b20c724b
BUG: Copy/paste error

Coverity reports:

CID 1080814 (1 of 1): Copy-paste error (COPY_PASTE_ERROR)
copy_paste_error: "it" in "it" looks like a copy-paste error. Should it say "it2" instead?

Change-Id: I40cbe342f3330b8043febb3b8ecc298189adc34e
Merge topic 'Coverity_CutPasteError'

ac523125 BUG: Copy/paste error
Merge topic 'StatisticsRelabelImageFilterCodeCoverage'

d83a3907 ENH: Added StatisticsRelabelImageFilterTest to testing