Use raw_buffer in unique.
Use raw_buffer in unique.

--HG--
extra : convert_revision : svn%3A83215879-3e5a-4751-8c9d-778f44bb06a5/trunk%40333

xiongzhanblake/thrust_src,thvasilo/thrust,zeryx/thrust,sdalton1/thrust,jaredhoberock/thrust,egaburov/thrust,thrust/thrust,zhenglaizhang/thrust,mohamed-ali/thrust,thrust/thrust,zhenglaizhang/thrust,sarvex/thrust,dachziegel/thrust,thrust/thrust,thrust/thrust,marksantos/thrust,zeryx/thrust,arnabgho/thrust,jaredhoberock/thrust,sarvex/thrust,raygit/thrust,GrimDerp/thrust,GrimDerp/thrust,raygit/thrust,xiongzhanblake/thrust_src,raygit/thrust,arnabgho/thrust,thvasilo/thrust,thvasilo/thrust,Ricardo666666/thrust,andrewcorrigan/thrust-multi-permutation-iterator,xiongzhanblake/thrust,zhenglaizhang/thrust,xiongzhanblake/thrust,marksantos/thrust,arnabgho/thrust,jaredhoberock/thrust,egaburov/thrust,andrewcorrigan/thrust-multi-permutation-iterator,xiongzhanblake/thrust_src,mohamed-ali/thrust,sdalton1/thrust,dachziegel/thrust,xiongzhanblake/thrust,dachziegel/thrust,Ricardo666666/thrust,marksantos/thrust,mohamed-ali/thrust,sarvex/thrust,jaredhoberock/thrust,thrust/thrust,zeryx/thrust,egaburov/thrust,andrewcorrigan/thrust-multi-permutation-iterator,GrimDerp/thrust,jaredhoberock/thrust,Ricardo666666/thrust,sdalton1/thrust