Bounty #1: use altivec to optimize the file x265/source/common/ipfilter.cpp

[Former user]

As a following action of ticket 137 (https://bitbucket.org/multicoreware/x265/issue/137/add-power-altivec-support-to-x265), there will be 3 bounties opened soon on bounty source to promote the altivec support in x265: https://www.bountysource.com/teams/ibm/bounties

Here is the summary of the first bounty: Use GCC altivec intrincics (https://gcc.gnu.org/onlinedocs/gcc/PowerPC-AltiVec_002fVSX-Built-in-Functions.html#PowerPC-AltiVec_002fVSX-Built-in-Functions) to optimize all of the functions in the x265/source/common/ipfilter.cpp. The result should be merged back to x265 open source software (http://x265.org/developers/). Estimated Price: 550USD