ref: 7756e9892b312e668fc3134bad2513806d609f73
parent: 9a480482cbc7f0d359d959bb2cfe097d0a672d6b
parent: 25c588b1e49deb70a06549a8c843c9a3bc19ea1a
author: Ronald S. Bultje <rbultje@google.com>
date: Fri Jun 21 08:49:50 EDT 2013
Merge "Add subtract_block SSE2 version and unit test."