[milestone1 python] implemented pythontalker script
[opwig-python] implemented check for correct number of arguments in wrapped functions and printing conversion exception message
[opwig-python] implemented namespace handling in python wrapper specification;
Updated metadataobject nested_name method to select global separator or not;
[opwig-python] fixed root module naming in generated code
[milestone 1] Implemented C++ module functions;
Commented out Lua wrappings (still incomplete) from CMakeLists and small change on pythontalker script;

[opwig-python] Fixed python specification for functions that return void;
Merge branch 'python-milestone1' into dev