Compiler dependent problems again on ppc64

[Jukka A. Ukkonen]

Hello all,

It seems there is yet another compiler dependent problem on
ppc64. Most likely the same problem applies to all platforms
using the old gcc as the default compiler.
When trying to build gnu/lib/libstdc++ the compiler seems to
get the option -std=c++11. The gcc complains about this and
the build gets invariably broken at that point. This has now
been going on for two days or so. This makes me believe nobody
is actively running rebuilds of the latest current on any gcc
based platform.

--jau