Added the missing GPU allocator file to the Cmake build.
Added the missing GPU allocator file to the Cmake build.

andschwa/mesos,zmalik/mesos,gsantovena/mesos,jpeach/mesos,neilconway/mesos,Gilbert88/mesos,abudnik/mesos,zmalik/mesos,verizonlabs/mesos,asamerh4/mesos,Aman-Jain-14/customizedMesos,yuquanshan/customizedMesos,reneploetz/mesos,Aman-Jain-14/customizedMesos,yuquanshan/customizedMesos,yuquanshan/customizedMesos,gsantovena/mesos,chhsia0/mesos,verizonlabs/mesos,craimbert/mesos,abudnik/mesos,verizonlabs/mesos,neilconway/mesos,zmalik/mesos,reneploetz/mesos,kaysoky/mesos,chhsia0/mesos,verizonlabs/mesos,andschwa/mesos,chhsia0/mesos,reneploetz/mesos,zmalik/mesos,andschwa/mesos,yuquanshan/customizedMesos,asamerh4/mesos,jpeach/mesos,Gilbert88/mesos,jpeach/mesos,yuquanshan/customizedMesos,zmalik/mesos,kaysoky/mesos,kaysoky/mesos,abudnik/mesos,gsantovena/mesos,Gilbert88/mesos,andschwa/mesos,kaysoky/mesos,Gilbert88/mesos,gsantovena/mesos,reneploetz/mesos,yuquanshan/customizedMesos,Aman-Jain-14/customizedMesos,gsantovena/mesos,verizonlabs/mesos,dforsyth/mesos,verizonlabs/mesos,dforsyth/mesos,craimbert/mesos,neilconway/mesos,dforsyth/mesos,reneploetz/mesos,dforsyth/mesos,andschwa/mesos,craimbert/mesos,Gilbert88/mesos,neilconway/mesos,craimbert/mesos,chhsia0/mesos,neilconway/mesos,asamerh4/mesos,reneploetz/mesos,chhsia0/mesos,verizonlabs/mesos,asamerh4/mesos,andschwa/mesos,jpeach/mesos,Aman-Jain-14/customizedMesos,andschwa/mesos,chhsia0/mesos,Gilbert88/mesos,craimbert/mesos,zmalik/mesos,Aman-Jain-14/customizedMesos,abudnik/mesos,jpeach/mesos,Aman-Jain-14/customizedMesos,asamerh4/mesos,jpeach/mesos,Gilbert88/mesos,asamerh4/mesos,abudnik/mesos,zmalik/mesos,kaysoky/mesos,craimbert/mesos,abudnik/mesos,Aman-Jain-14/customizedMesos,asamerh4/mesos,dforsyth/mesos,neilconway/mesos,gsantovena/mesos,chhsia0/mesos,kaysoky/mesos,craimbert/mesos,kaysoky/mesos,dforsyth/mesos,reneploetz/mesos,gsantovena/mesos,abudnik/mesos,yuquanshan/customizedMesos,dforsyth/mesos,neilconway/mesos,jpeach/mesos