Correctly push/pop Bulk macros instead of trying to undefine and then redefine them.
Correctly push/pop Bulk macros instead of trying to undefine and then redefine them.

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