[C++1y] Support n3599 - Literal operator templates for strings for C++1y

Here is a small patch which fixes a derp in the C++11 standard up for repair in c+14 or so. It allows you to have things like templatetypename CharT, CharT... String constexpr int operator _crypto() {...} ... int i = hi there!_crypto; And many other things. The string literal

Re: [C++1y] Support n3599 - Literal operator templates for strings for C++1y

OK. Jason