Fixes #63 and miscellaneous bugs.

[JoshVarty]

This fixes #63 as well as some undocumented bugs with parameters and local variables:

• Local variable's fully qualified names were being set to their simple name. This meant that using variables both named data in different functions would cause one definition to incorrectly link to the other.
• Parameters were linking to the method itself instead of the parameter inside of the method.
• Search was returning local variables and parameters.

In order to differentiate between different local variables, I append a delimeter (::) and the simple name of the variable to the function or property in which they are contained.

Consider the following:

namespace MyNamespace
{
    class MyClass 
    {
        void MyMethod() { int myVariable = 4; }
    }
}

The fully qualified name of myVariable is now MyNamespace.MyClass.MyMethod::myVariable. I believe this should work for C# but I'm less familiar with naming rules in VB .Net.

I'll be using a similar approach (but a different delimiter) for #64.