Support for mha
Remove build clitk options in superbuild, add gdcm 2.2.4.
Remove C++11 call to isnormal

- std::isnormal is not available under windows VS12. Implement it using
numeric_limits functions
Revert "Remove C++11 call to isnormal"

This reverts commit a845c6a04ecfeedc8eced5f4051e06ee88c59e90.
Use IsNormal instead of std::isnormal (C++11)

std::isnormal is a C++11 function not available in VS 2012
use IsNormal defined in clitkPortability instead
Merge branch 'master' of git.creatis.insa-lyon.fr:clitk
Median Filter + some bug corrections in Resample Image Filter
revert the local CLITK_USE_SYSTEM_GDCM path - not wanted to commit it
Improved Elastix conversion
Merge branch 'master' of git.creatis.insa-lyon.fr:clitk
Remove warning with .mha files
Allow for uncertainties which name does not start with output
Add mha in uncertainty files and error message if unhandled file format
Removed warning introcued by commit 19f3573f7b12d29bb33c80311ee1e8ff7bcb01f3
Refactor cluster_tools CMakeLists

- Remove add_subdiretory in tools/CMakeLists.txt
- Add add_subdiretory in CMakeLists.txt
- Add test to install cluster_tools if CLITK_BUILD_TOOLS is ON
gradient magnitude tool
Merge branch 'master' of git.creatis.insa-lyon.fr:clitk
added an optional mask + the possibility to get a normalized output image
deleted an extra quote
new tool to compute the laplacian of an image