COMP: Improve Compilation for ITK modules

The COMPONENTS argument to find_package is convenient for simple projects, but complex projects that "find" ITK multiple times with different component requirements could just call find_package without the components list and then use itk_module_config from the ITKModuleAPI.cmake module (available after find_package(ITK) returns) to compute the requirements variables with a custom name:

find_package(ITK 4.5 REQUIRED)
itk_module_config(MyITK ${MyITK_COMPONENTS})
MyITK_INCLUDE_DIRS and MyITK_LIBRARIES
ENH: Adding MALF label fusion to autoworkup

The multi-atlas label fusion code initial testing is added to autoworkup
for initial data processing and testing.