[arm] branches to weak symbols

[Vincent Rivière]

Nathan Sidwell wrote:
> This patch fixes some arm cases where the assembler did not consider 
> that a weakly defined symbol might be overridden in the final link.

Just in case it could help, your bug may have some similarities with 
this one, which had been fixed for m68k targets using a.out.
http://sourceware.org/bugzilla/show_bug.cgi?id=3041

-- 
Vincent Rivière