[PING^2, PATCH, ARM] Improved core -> NEON extend

[Ulrich Weigand]

> http://gcc.gnu.org/ml/gcc-patches/2012-11/msg00984.html
> Ping.

-- 
  Dr. Ulrich Weigand
  GNU Toolchain for Linux on System z and Cell BE
  ulrich.weig...@de.ibm.com