Rename `aloc` to `attr_loc`
Rename `aloc` to `attr_loc`

Summary: I'm using "aloc" as shorthand for "abstract location," so I'm changing this one to "attr_loc" to avoid confusion.

Reviewed By: samwgoldman

Differential Revision: D10093118

fbshipit-source-id: 5e5945436b13b467cdd5d801be368be5ada73cd8

gabelevi/flow,gabelevi/flow,popham/flow,facebook/flow,samwgoldman/flow,samwgoldman/flow,jamesgpearce/flow,facebook/flow,popham/flow,popham/flow,AgentME/flow,mroch/flow,jamesgpearce/flow,mroch/flow,jamesgpearce/flow,facebook/flow,popham/flow,jamesgpearce/flow,AgentME/flow,samwgoldman/flow,samwgoldman/flow,AgentME/flow,jamesgpearce/flow,samwgoldman/flow,facebook/flow,mroch/flow,gabelevi/flow,facebook/flow,jamesgpearce/flow,AgentME/flow,gabelevi/flow,AgentME/flow,samwgoldman/flow,gabelevi/flow,mroch/flow,gabelevi/flow,mroch/flow,popham/flow,jamesgpearce/flow,popham/flow,mroch/flow,facebook/flow,popham/flow,samwgoldman/flow,mroch/flow,facebook/flow,gabelevi/flow