[PING][C++ Patch, 4.8] Backport fix for c++/54537 to FSF 4.8

[Jonathan Wakely]

On 03/04/14 10:25 -0500, Peter Bergner wrote:
>I'd like to ping the following backport patch for the fix for PR54537.
>This did bootstrap and regtest with no regressions on powerpc64-linux.
>
>  http://gcc.gnu.org/ml/gcc-patches/2014-03/msg01148.html

I don't know how risky the front-end change is, but if it gets
approved then the library part is obviously fine.

That said, my kneejerk reaction is if it's only really needed to
allow inclusion of <tr1/cmath> then my solution would be to not use
that TR1 header!