Added extension registration for double and int types so toString() is recognized during method lookup.
Improved getQualifiedClassName() so namespaces System and _root are not part of the name.
Various refactoring related to ConvertMethodParameters.
    Potential conversion between types has been improved.
    We detect the error case where there is a mismatch between the passed parameters and the expected parameters.
    We also check for variadic parameter only for the last parameter.
    Constructor invocation is now using the Dynamic.ConvertMethodParameters(), so it is now much more robust.
Committed some temporary changes in partially implemented stubs to help debug projects.