Fix stpcpy / mempcpy namespace (bug 17573)

[Vidya Praveen]

On Fri, Nov 14, 2014 at 10:20:48AM +0000, Vidya Praveen wrote:
> On Thu, Nov 13, 2014 at 08:18:49PM +0000, Joseph Myers wrote:
> > Note that I haven't yet committed this build fix patch for architectures 
> > using C stpcpy / mempcpy 
> > <https://sourceware.org/ml/libc-alpha/2014-11/msg00305.html>, pending 
> > confirmation from somebody that it seems sane.
> 
> This fixes aarch64-none-linux-gnu build.

And arm-none-linux-gnueabi/gnueabihf.

VP.