Adding dynamic redirects. Fix for #793

Fix for #793 

*Do not merge this yet!!!!*

This change removes all static binding redirects in app.config, and introduces dynamic redirects in core. The way this is done is by listening to the AssemblyResolve event on the AppDomain, and loading / returning the assembly to redirect to. It turns out using this technique you can swap on the fly and give a different assembly than what was requested.

At startup, it builds a map in map in memory based on the assemblies that scriptcs ships with ensuring that any requests for the same names will be redirected to it's version. It also ensures that any packages in the scriptcs packages folder take precedence over what the script pack / packages assemblies were actually compiled against.

Assembly black magic at its finest....

It appears to work so far :-)

This does not fix the Service Stack script pack issue, as there appears to be no magical fix for that other than updating the script pack. However, I was able to get the old Web Api script pack to work with the latest Web Api (see comments)


Well the result is not needed, I can just invoke ToList and not save the
return val. That is what I had before

On Monday, July 14, 2014, Adam Ralph <notifications@github.com> wrote:

> In src/ScriptCs.Hosting/RuntimeServices.cs:
>
> >                  {
> >                      try
> >                      {
> > -                        var catalog = new AssemblyCatalog(assembly);
> > -                        catalog.Parts.ToList(); //force the Parts to be read
> > +                        var catalog = new AssemblyCatalog(assemblyPath);
> > +                        //force the parts to be queried to catch any errors that will shwo up later
> > +                        var parts = catalog.Parts.ToList();
>
> The TravisCI build is failing because the Mono compiler is realising that
> parts is never used and we have warnings set to errors.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/scriptcs/scriptcs/pull/798/files#r14918347>.
>