Open source build fixes
Open source build fixes

Summary:
- -lsnappy was missing
- For me, on both internal devserver and Amazon Web services EC2 the generated python dir is lib/.
Documentation of setuptools says that it will only be lib.PLATFORM-ARCH-VERSION if there's native code
in the python library.  Just add both options for now.

Test Plan: built open source fbthrift

Reviewed By: davejwatson@fb.com

Subscribers: alandau, bmatheny

FB internal diff: D1374921

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