[hack] Switch Watchman from Printf to Hh_logger
[hack] Switch Watchman from Printf to Hh_logger

Summary: There were a bunch of debugging printf's in watchman.ml which should probably be using Hh_logger

Reviewed By: alexchow

Differential Revision: D8249229

fbshipit-source-id: c82b6b5455b0e83feaebdb1c9d957479f5b450ba

mroch/flow,AgentME/flow,jamesgpearce/flow,claudiopro/flow,AgentME/flow,popham/flow,facebook/flow,nmote/flow,jamesgpearce/flow,mroch/flow,samwgoldman/flow,gabelevi/flow,gabelevi/flow,samwgoldman/flow,gabelevi/flow,gabelevi/flow,facebook/flow,gabelevi/flow,gabelevi/flow,mroch/flow,nmote/flow,nmote/flow,facebook/flow,jamesgpearce/flow,popham/flow,nmote/flow,nmote/flow,claudiopro/flow,JonathanUsername/flow,mroch/flow,nmote/flow,samwgoldman/flow,popham/flow,JonathanUsername/flow,facebook/flow,facebook/flow,popham/flow,gabelevi/flow,JonathanUsername/flow,mroch/flow,AgentME/flow,jamesgpearce/flow,facebook/flow,mroch/flow,samwgoldman/flow,popham/flow,samwgoldman/flow,AgentME/flow,claudiopro/flow,facebook/flow,popham/flow,JonathanUsername/flow,jamesgpearce/flow,AgentME/flow,samwgoldman/flow,claudiopro/flow,popham/flow,claudiopro/flow,jamesgpearce/flow,JonathanUsername/flow,JonathanUsername/flow,jamesgpearce/flow,samwgoldman/flow,JonathanUsername/flow,nmote/flow,mroch/flow