Do not generate _result for cpp1
Do not generate _result for cpp1

Summary:
In cpp1 _result is used in process_m and throw_m. Change to use
_presult and no longer generate _result. This is similar to D1822220.

Test Plan: fbconfig&&fbmake then visually check generated cpp1 code

Reviewed By: mshneer@fb.com

Subscribers: alandau, mshneer, yfeldblum

FB internal diff: D1823640

Signature: t1:1823640:1423074325:8cd8ef875d11e59af5c8b93f62ce64eee3ef8018

sinjar666/fbthrift,Orvid/fbthrift,Orvid/fbthrift,kangkot/fbthrift,SergeyMakarenko/fbthrift,project-zerus/fbthrift,guker/fbthrift,project-zerus/fbthrift,sinjar666/fbthrift,maxwell-demon/fbthrift,getyourguide/fbthrift,sinjar666/fbthrift,guker/fbthrift,Orvid/fbthrift,fengshao0907/fbthrift,maxwell-demon/fbthrift,HankFaan/fbthrift,LinusU/fbthrift,chjp2046/fbthrift,maxwell-demon/fbthrift,fengshao0907/fbthrift,guker/fbthrift,getyourguide/fbthrift,HankFaan/fbthrift,facebook/fbthrift,chjp2046/fbthrift,LinusU/fbthrift,soumith/fbthrift,Orvid/fbthrift,LinusU/fbthrift,guker/fbthrift,kangkot/fbthrift,fengshao0907/fbthrift,Orvid/fbthrift,HankFaan/fbthrift,chjp2046/fbthrift,facebook/fbthrift,SergeyMakarenko/fbthrift,facebook/fbthrift,chjp2046/fbthrift,kangkot/fbthrift,raphaelamorim/fbthrift,getyourguide/fbthrift,sinjar666/fbthrift,project-zerus/fbthrift,maxwell-demon/fbthrift,facebook/fbthrift,chjp2046/fbthrift,HankFaan/fbthrift,getyourguide/fbthrift,sinjar666/fbthrift,guker/fbthrift,soumith/fbthrift,fengshao0907/fbthrift,fengshao0907/fbthrift,Orvid/fbthrift,sinjar666/fbthrift,facebook/fbthrift,fengshao0907/fbthrift,sinjar666/fbthrift,guker/fbthrift,HankFaan/fbthrift,kangkot/fbthrift,guker/fbthrift,soumith/fbthrift,fengshao0907/fbthrift,facebook/fbthrift,guker/fbthrift,raphaelamorim/fbthrift,kangkot/fbthrift,kangkot/fbthrift,getyourguide/fbthrift,project-zerus/fbthrift,project-zerus/fbthrift,maxwell-demon/fbthrift,SergeyMakarenko/fbthrift,SergeyMakarenko/fbthrift,getyourguide/fbthrift,sinjar666/fbthrift,Orvid/fbthrift,HankFaan/fbthrift,HankFaan/fbthrift,soumith/fbthrift,facebook/fbthrift,LinusU/fbthrift,soumith/fbthrift,chjp2046/fbthrift,sinjar666/fbthrift,sinjar666/fbthrift,SergeyMakarenko/fbthrift,maxwell-demon/fbthrift,soumith/fbthrift,Orvid/fbthrift,LinusU/fbthrift,Orvid/fbthrift,kangkot/fbthrift,kangkot/fbthrift,chjp2046/fbthrift,LinusU/fbthrift,LinusU/fbthrift,raphaelamorim/fbthrift,facebook/fbthrift,getyourguide/fbthrift,raphaelamorim/fbthrift,project-zerus/fbthrift,LinusU/fbthrift,project-zerus/fbthrift,chjp2046/fbthrift,fengshao0907/fbthrift,project-zerus/fbthrift,getyourguide/fbthrift,maxwell-demon/fbthrift,maxwell-demon/fbthrift,soumith/fbthrift,fengshao0907/fbthrift,getyourguide/fbthrift,soumith/fbthrift,raphaelamorim/fbthrift,LinusU/fbthrift,fengshao0907/fbthrift,LinusU/fbthrift,chjp2046/fbthrift,maxwell-demon/fbthrift,Orvid/fbthrift,sinjar666/fbthrift,kangkot/fbthrift,raphaelamorim/fbthrift,kangkot/fbthrift,chjp2046/fbthrift,soumith/fbthrift,SergeyMakarenko/fbthrift,project-zerus/fbthrift,SergeyMakarenko/fbthrift,guker/fbthrift,SergeyMakarenko/fbthrift,raphaelamorim/fbthrift,project-zerus/fbthrift,project-zerus/fbthrift,LinusU/fbthrift,SergeyMakarenko/fbthrift,getyourguide/fbthrift,getyourguide/fbthrift,guker/fbthrift,project-zerus/fbthrift,Orvid/fbthrift,raphaelamorim/fbthrift,kangkot/fbthrift,soumith/fbthrift,maxwell-demon/fbthrift,SergeyMakarenko/fbthrift,SergeyMakarenko/fbthrift,HankFaan/fbthrift,chjp2046/fbthrift,fengshao0907/fbthrift,HankFaan/fbthrift,SergeyMakarenko/fbthrift,HankFaan/fbthrift,guker/fbthrift,facebook/fbthrift,chjp2046/fbthrift,maxwell-demon/fbthrift,raphaelamorim/fbthrift,raphaelamorim/fbthrift,getyourguide/fbthrift,raphaelamorim/fbthrift,soumith/fbthrift,HankFaan/fbthrift