Support of gdb for Windows 64 native systems

[Joel Brobecker]

> There's documentation in the internals manual.  For a native Windows
> target, you'd have to talk to Chris about how to avoid duplicating
> or complicating the Cygwin support.

Just for the record, AdaCore has a native win32 port of GDB, inspired
mostly from the mingw project. Our patch is kept up to date against
the FSF head too, so it should be relatively easy to submit it.
Except, as Daniel mentions, there are probably some issues relative
to co-existence with cygwin support that need to be addressed. This
is high on my list, so if I wasn't so busy for this end of year, it's
a project I would have already started. (and there is the copyright
assignment issue, but I'm hoping this is solvable)

-- 
Joel