accept @pure @nothrow @return attributes

[Walter Bright via Digitalmars-d]

On 1/27/2015 2:14 AM, Jacob Carlborg wrote:
> You have complained that one of your old D1 projects didn't compile with the
> latest D2 compiler. How would you expect that to still compile when making
> changes like this and without those things Dicebot mentioned.

This change didn't break a single line in the libraries or the test suite.