Never emit R_ARM_PC24 relocations when linking

[Richard Earnshaw]

> > > 
> > > > Yes.  The only difference I see in their handling now is a case I
> > > > missed in relocate_section, and some PC24 code that doesn't handle
> > > > PLT32 for interworking.
> > > > 
> > > 
> > > Are you going to address those in another iteration of this patch, or as a 
> > > separate one?
> > 
> > Separate.
> 
> OK then.
> 

Argh!  Unfortunately this has completely broken testing for arm-elf.  Just 
try and run the gcc testsuite when using the new linker -- it keeps trying 
to make PLT entries in a non-shared library environment :-(

R.