ENH: Updating IASEM extension adding LabelObject Statistics module

Adding new module derived from the basic Label Statistics module which
uses SimpleITK for more computation efficiency as well as additional
Shape LabelObject statistics.
Merge pull request #789 from blowekamp/update-IASEM

ENH: Updating IASEM extension adding LabelObject Statistics module
Added VolumeClip extension

See more info at http://www.slicer.org/slicerWiki/index.php/Documentation/4.3/Extensions/VolumeClip
Merge pull request #790 from lassoan/update-VolumeClip

Added VolumeClip extension
Updated VolumeClip - fixed extension path
Merge pull request #791 from lassoan/update-VolumeClip

Updated VolumeClip - fixed extension path
ENH: Add LightWeightRobotIGT Extension
removed dependence on openmp
Merge pull request #793 from ikolesov/update-CarreraSlice

added JC's changes and removed dependence on openmp
Merge pull request #792 from tauscherSw/add-LightWeightRobotIGT

ENH: Add LightWeightRobotIGT Extension
ENH: Update CurveMaker extension

This updates the CurveMaker extension to
0f6b52a3a2022abfbfd445e56110dcd0b6597ed5.
Merge pull request #794 from tokjun/update-CurveMaker-master

ENH: Update CurveMaker extension
fixed complilation issue on Mac OS
Merge pull request #795 from ljzhu/update-FastGrowCut

fixed complilation issue on Mac OS
ENH: Update IntensitySegmenter from r12 to r13

BUG: include(ExternalData) was missing.

Project was not configuring with CMake 2.8*, but only with CMake 3. Inclusion of CTest and ExternalData has been moved to main CMakeLists (not superbuild) to be able to run the tests from the main folder.

http://www.nitrc.org/plugins/scmsvn/viewcvs.php?view=rev&root=dentaltools&revision=13
Merge pull request #797 from fbudin69500/update-IntensitySegmenter

ENH: Update IntensitySegmenter from r12 to r13
Updating IASEM extension

This update add the IASEM Series Import module.
Merge pull request #799 from blowekamp/update-IASEM

Updating IASEM extension
ENH: Update ModelToModelDistance from revision c418cf6b1435d2fb2add9bc6b66920d9cbcb074d to b14ee82a7a9b54f15ee668909141691409a4db7e

https://www.github.com/NIRALUser/3DMetricTools/compare/c418cf6b1435d2fb2add9bc6b66920d9cbcb074d%E2%80%A6b14ee82a7a9b54f15ee668909141691409a4db7e
Merge pull request #800 from fbudin69500/update-ModelToModelDistance

ENH: Update ModelToModelDistance from revision c418cf6b1435d2fb2add9bc6b...