added cpu->gpu handoff and gpu->cpu handoff tests
added cpu->gpu handoff and gpu->cpu handoff tests

songhan/neon,coufon/neon-distributed,sherjilozair/neon,rupertsmall/neon,SalemAmeen/neon,kod3r/neon,NervanaSystems/neon,FighterLYL/neon,SalemAmeen/neon,Bam4d/neon,tambetm/neon,chetan51/neon,misko/neon,NervanaSystems/neon,rupertsmall/neon,chetan51/neon,dongjoon-hyun/neon,ruguevara/neon,misko/neon,vseledkin/neon,sunclx/neon,DougFirErickson/neon,DougFirErickson/neon,zolegus/neon,Bam4d/neon,shyamalschandra/neon,lihuanghai/neon,jfsantos/neon,chetan51/neon,kracwarlock/neon,shyamalschandra/neon,zolegus/neon,Jokeren/neon,zolegus/neon,kashif/neon,sunclx/neon,dongjoon-hyun/neon,DougFirErickson/neon,FighterLYL/neon,NervanaSystems/neon,kod3r/neon,jfsantos/neon,Jokeren/neon,neuroidss/neon,nhynes/neon,kracwarlock/neon,SalemAmeen/neon,nhynes/neon,nkhuyu/neon,nhynes/neon,sherjilozair/neon,FighterLYL/neon,NervanaSystems/neon,ypkang/neon,sherjilozair/neon,coufon/neon-distributed,Jokeren/neon,dongjoon-hyun/neon,Jokeren/neon,lihuanghai/neon,kod3r/neon,coufon/neon-distributed,vseledkin/neon,tambetm/neon,misko/neon,ypkang/neon,shyamalschandra/neon,neuroidss/neon,vseledkin/neon,ruguevara/neon,rupertsmall/neon,Bam4d/neon,nkhuyu/neon,jfsantos/neon,sunclx/neon