2014-12-05  Olivier Hainque  <hainque@adacore.com>

        gcc/
        * defaults.h: (DWARF_REG_TO_UNWIND_COLUMN): Define default.
        * dwarf2cfi.c (init_one_dwarf_reg_size): Honor
        DWARF_REG_TO_UNWIND_COLUMN.

        libgcc/
        * unwind-dw2.c (DWARF_REG_TO_UNWIND_COLUMN): Remove default def,
        now provided by defaults.h.

From-SVN: r218429