[RFA/commit/dwarf] Create partial symbols for nested subprograms

[Joel Brobecker]

> > 2008-09-11  Joel Brobecker  <brobecker@adacore.com>
> > 
> >         * dwarf2read.c (add_partial_subprogram): New procedure.
> >         (scan_partial_symbols): Use it.
> >         (load_partial_dies): Read in children of subprogram and lexical
> >         blocks for Ada compilation units.
> > 
> > Tested on x86-linux, no regression.
> 
> Yes, this is OK.  I agree it's the right compromise, at least for the
> moment.

Thanks! Now checked in.

-- 
Joel