[PATCH 2/6] gold: Add 64-bit archive support.

[Cary Coutant]

> +      if (!this->header_.name.empty() && this->header_.name != "/" && this->header_.name != "/SYM64/")

This line is too long. I've fixed it, and will commit the patch on
your behalf, with this ChangeLog entry:

2015-10-28  Marcin Kościelnicki  <koriakin@0x04.net>

gold/
        * archive.cc (Archive::sym64name): New const.
        (Archive::setup): Add support for SYM64 armap.
        (Archive::read_armap): Likewise.
        (Archive::interpret_header): Likewise.
        (Archive::const_iterator::read_next_header): Likewise.
        * archive.h (Archive::sym64name): New const.
        (Archive::read_armap): Add mapsize template parameter.

Thanks!

-cary