[x265] issue 139

[John Comeau]

https://bitbucket.org/multicoreware/x265/issues/139 was solved over a
year ago by rmoussal at us.ibm.com when he wrote
source/common/ppc/pixel_altivec.cpp. the issue should be closed and
the bounty awarded as appropriate.

I've done some testing to prove that the altivec code is indeed being
used by the binary when built on the PPC architecture, and produces an
hevc video that plays the same as one produced on an x86_64 system. I
can provide access to the PPC instance to anyone who wishes to verify
before closing the issue.
-- 
John Comeau KE5TFZ jc at unternet.net http://jc.unternet.net/
"A place for everything, and everything all over the place"