{patch bfd/ld/binutils]: Adjust calling convention of x64 windows to non-leading underscore

[Nick Clifton]

Hi Kai,

> Additional changelog entry
>          * testsuite/binutils-all/dlltool.exp: Allow test for
> arm-wince-pe target.
>          Make test underscore default-mode independent.

Approved - please apply.

Cheers
   Nick