Add support for powerpc64, along with an EXPERIMENTAL sample.

 /trunk/scripts/build/arch/powerpc64.sh                      |   21     1    20     0 -
 /trunk/scripts/build/arch/powerpc.sh                        |   21     1    20     0 -
 /trunk/samples/powerpc64-unknown-linux-gnu/crosstool.config |  388   388     0     0 +++++++++++++++++++
 /trunk/samples/powerpc64-unknown-linux-gnu/reported.by      |    3     3     0     0 +
 /trunk/config/arch/powerpc-powerpc64.in-common              |   12     4     8     0 -
 /trunk/config/arch/powerpc.in                               |   15     0    15     0 -
 /trunk/config/arch/powerpc64.in                             |   19     3    16     0 -
 7 files changed, 400 insertions(+), 79 deletions(-)