[Patch/xcoff]: xcofflink.c: handle new dwarf sections and symbols

[Nick Clifton]

Hi Tristan,

> bfd/
> 2011-05-13  Tristan Gingold<gingold@adacore.com>
>
> 	* xcofflink.c (xcoff_link_add_symbols): Handle C_DWARF symbols.
> 	(xcoff_sweep): Always keep dwarf sections.
> 	(xcoff_link_input_bfd): Handle dwarf symbols and sections.

Approved - please apply.

Cheers
   Nick