fix typos in tie()
fix typos in tie()

--HG--
extra : convert_revision : svn%3A83215879-3e5a-4751-8c9d-778f44bb06a5/trunk%40791

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