[m-rev.] For review: Improve the name mangling of foreign methods in the IL backend

[Julien Fischer]

On Tue, 5 Jun 2007, Jonathan Morgan wrote:

> Estimated hours taken: 4
> Branches: main
>
> Improve the name mangling for foreign language methods under the IL backend.
> Currently, method names containing spaces, punctuation, and other unusual
> characters are acceptable in IL (because all method names are quoted), but 
> are
> not acceptable in C# or Managed C++.  This change converts all such foreign
> names that are not alphanumeric or underscore to a valid C identifier in the
> same way as in the C-based backends.
>
> compiler/mlds_to_il.m:
> 	Alter the name mangling routines to allow it to mangle foreign names
> 	differently from ordinary IL names.  Alter the forwarding methods for
> 	foreign routines to call the mangled version of the method in the
> 	foreign module, rather than calling one with the IL method name.
>
> compiler/mlds_to_managed.m:
> 	Alter the generation of foreign methods to use the new mangled name.

This change causes tests/valid/foreign_type_spec to fail.

Julien.
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