Change predux on PowerPC for Packet4i to NOT saturate the sum of the elements (like other architectures).

Chip Kerchnerrequested to merge
ChipKerchner/eigen:fixIntPreduxPowerPC into master

Change predux on PowerPC for Packet4i to NOT saturate the sum of the elements (like other architectures).

vec_sums return a saturated sum of the elements.

Merge request reports