[vxworks, ppc] shared objects and copy relocs

[Nathan Sidwell]

I've installed this patch to fix a problem with vxworks rtp shared objects and 
weak symbols.  The problem here was that the executable was resolving a symbol 
to a shared object, and thought it could eliminate a copy reloc because the only 
references were in the small data section.   Unfortunately that doesn't work on 
vxworks.

This patch matches code in elf32-i386, which has exactly the same problem.

tested on powerpc-wrs-vxworks.

nathan

-- 
Nathan Sidwell    ::   http://www.codesourcery.com   ::         CodeSourcery
nathan@codesourcery.com    ::     http://www.planetfall.pwp.blueyonder.co.uk

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