UBUNTU: [Config] Add libc6-dev-ppc64 so that builds on 64-bit platforms works

This was caused by changes in gcc that includes stdc-predef.h explicitly.

Signed-off-by: Ben Collins <ben.c@servergy.com>
UBUNTU: PPC-Ubuntu-3.10.0-0.3

Ignore: yes
Signed-off-by: Ben Collins <ben.c@servergy.com>