NativeMethod - add ability to pass params object[] (as in {Float:,_}:...)

[ghost]

No description provided.

[ikkentim]

Added simple varargs support.

• NOTE: The variable arguments array must be of type object[] and must be decorated with the params attribute.
• NOTE: Currently, only varargs of type int, bool and float are supported. If someone needs support for other types, they should raise an issue.
• NOTE: I've only added support in the "fast natives" variant of native objects. This means this will ONLY work in hosted mode, not in muli-process mode. I didn't want to put time into implementing this feature in multi-process mode because this mode is deprecated.
  Example:

    public class SomeClassWithNatives
    {
        [NativeMethod]
        public virtual void VarArgsTestMethod(int x, int y, int z, params object[] args)
        {
            throw new NativeNotImplementedException();
        }
    }

[ikkentim]

Strings and arrays are now also supported in varargs.