Blackfin patch: Clean up bfin_relocate_section

[Jie Zhang]

Bernd Schmidt wrote:
> This patch cleans up bfin_relocate_section - the BFD documentation 
> suggests that it shouldn't be calling the howto's special_function, and 
> cleaning that up solved some problems I was having with some upcoming 
> assembler modifications.
> 
> I'm working on this port at Analog Devices together with Jie Zhang.  Can 
> I add myself to the MAINTAINERS file?  In the meantime, could someone 
> approve the patch please?
> 
> ------------------------------------------------------------------------
> 
> 	* elf32-bfin.c (bfin_howto_table): Set src_mask to 0 for all relocs.
> 	(bfin_imm16_reloc): Always add in the addend.  Don't fetch existing
> 	contents from section.
> 	(bfin_relocate_section): Rework so as to not call special_functions.
> 	Handle the relocation stack here.  Treat pcrel24 relocs specially.
> 
Bernd: It looks OK for me. I'll apply it for you.

Nick: I'll be very glad to co-maintain bfin port of binutils with Bernd. 
Could you please approve?

Thanks,
Jie