711d8b - Rebase on 2.20.51.0.7 tarball.

Authored and Committed by nickc 10 years ago
    - Rebase on 2.20.51.0.7 tarball.
    - Delete redundant patches: binutils-2.20.51.0.2-add-needed.patch,
        binutils-2.20.51.0.2-do-not-set-ifunc.patch,
        binutils-2.20.51.0.2-enable-gold.patch,
        binutils-2.20.51.0.2-gas-expr.patch,
        binutils-2.20.51.0.2-ifunc-ld-s.patch, binutils-2.20.51.0.2-lwp.patch,
        binutils-2.20.51.0.2-ppc-hidden-plt-relocs.patch,
        binutils-2.20.51.0.2-x86-hash-table.patch,
    - Do not allow unique symbols to be bound locally. (PR ld/11434)
    - Add support for DWARF4 debug information.
    
        
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