- implemented Empty parameter name story. Now the name of input/return parameters of function can be not specified.

- added appropriate tests

Conflicts:
	test/SolidityEndToEndTest.cpp
	test/SolidityNameAndTypeResolution.cpp

Parser.h

@@ -50,6 +50,7 @@ private:
 		bool allowVar = false;
 		bool isStateVariable = false;
 		bool allowIndexed = false;
+		bool allowEmptyName = false;
 	};
 
 	///@{