Bug#791035: flatzebra: libstdc++ transition

[Simon McVittie]

Control: retitle 791035 flatzebra: libstdc++ transition
Control: user release.debian.org at packages.debian.org
Control: usertag 791035 + transition
Control: block 791035 by 790756
Control: reassign 791035 release.debian.org

I've done a team upload of flatzebra/0.1.6-3. I uploaded directly to
unstable since there is only one reverse dependency (burgerspace);
I've verified that burgerspace works when rebuilt (local pseudo-binNMU
with sbuild) against the updated flatzebra.

    S