ENH: Update SlicerExecutionModel - Add ParameterSerializer support

$ git shortlog 9202673..6956eb2b
Jean-Christophe Fillion-Robin (3):
      Merge pull request #20 from thewtex/parameter-serializer
      Merge pull request #22 from thewtex/find-jsoncpp
      Merge pull request #23 from thewtex/export-dep

Matt McCormick (5):
      ENH: Add GENERATE_TCLAP_ASSIGNMENT_IFSET generation.
      ENH: Add ParameterSerializer support.
      ENH: Add FindJsonCpp.cmake.
      BUG: Export the JsonCpp include directories in SlicerExecutionModelConfig.cmake.
      BUG: include ParameterSerializerConfig.cmake in SlicerExecutionModelConfig.cmake.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22847 3bd1e089-480b-0410-8dfb-8563597acbee