Protocol V1: Add initial support for fetching changed files and updates
Protocol V1: Add initial support for fetching changed files and updates

This adds in the support needed to go, snag, and bring back and
patch up files on this side of the connection

warthog9/syncdiff,warthog9/syncdiff,warthog9/syncdiff,arbenina/syncdiff,arbenina/syncdiff,arbenina/syncdiff