ParameterPool is exposed to python

Core/PythonAPI/src/PythonInterface_classes_1.cpp

Core/PythonAPI/src/PythonInterface_classes_2.cpp

Core/PythonAPI/src/PythonInterface_classes_3.cpp

Core/PythonAPI/src/PythonInterface_free_functions.cpp

Core/PythonAPI/src/PythonInterface_global_variables.cpp

Examples/UsageWithPython/test_parameter_pool.py

Macros/BoostPythonGenerator/codegenerator.py