Status update: Part 6

This update is critical for performance of math code and it has also fixes in multiple ways, so I recommend you to play with the Git source in Github:

- the logic of mapped types (bootstrap types) is a better story. Strings are implemented right now directly in .Net;
- a simple Class Hierarchy Analysis with default support of devirtualization is done (CR doesn't support at all devirtualized calls for now, but if you have a sequence where .Net reports a virtual call, and CR can detect the type, will remove the virtual call and will make it a direct call). This is done per-instance cases;
This makes that this program to work:

            var charData = new[] {'H','e','l','l','o',' ','w','o','r','l','d'};
            var s = new string(charData);
            Console.WriteLine(s);

Sure, not impressive, but it require many parts to work in place;
- all objects are constructed using make_shared, this means a speedup in loops that you allocate multiple objects
As more parts start to be in place, I would expect that in 2-3 months from now, I will make a first release (maybe on the New Year!?) milestone. I hope to make StringBuilder, String and File class basically working for some common operations.

A mini-roadmap for the next release:
- StringBuilder.Append(String) will work
- Bug fixes will be directed into higher level of optimizations with the programs using StringBuilder