Align Visual Studio-specific includes in http_parser with the upstream version.
Align Visual Studio-specific includes in http_parser with the upstream version.

Summary: Proxygen contains a fork of the open source HTTP parser. The open source parser got its headers changed to accommodate Visual Studio compilation, this diff propagates these header changes to Proxygen code.

Reviewed By: @bugok

Differential Revision: D2450849

songfj/proxygen,songfj/proxygen,pueril/proxygen,LilMeyer/proxygen,KublaikhanGeek/proxygen,songfj/proxygen,pueril/proxygen,pueril/proxygen,LilMeyer/proxygen,KublaikhanGeek/proxygen,pueril/proxygen,Orvid/proxygen,songfj/proxygen,KublaikhanGeek/proxygen,hiproz/proxygen,hiproz/proxygen,hiproz/proxygen,KublaikhanGeek/proxygen,Orvid/proxygen,hiproz/proxygen,LilMeyer/proxygen,Orvid/proxygen,Orvid/proxygen,LilMeyer/proxygen