Fix build with GHC 7.8
Fix build with GHC 7.8

Summary:
GHC now complains about out-of-range integer literals.

I should probably upstream this too, I suppose...

Test Plan: Build & tested Haxl

Reviewed By: jon.coens@fb.com

FB internal diff: D1258988


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