[lld] r267032 - ELF: support -- version of discard-{all,locals}

[Ed Maste via llvm-commits]

On 24 April 2016 at 14:08, Rafael Espíndola <llvm-commits at lists.llvm.org> wrote:
> Please delete the one dash version if we are the only one the supports it.

GNU ld's man page claims either one or two dashes can be used for all
multi-letter options, except that those starting with 'o' must have
two dashes.