Cut cdb options, add -dont_warn_unused ld flag.
Cut cdb options, add -dont_warn_unused ld flag.


kervinck/gigatron-rom,kervinck/gigatron-rom,kervinck/gigatron-rom,kervinck/gigatron-rom,kervinck/gigatron-rom,kervinck/gigatron-rom,kervinck/gigatron-rom