The IMPLEMENT_MODULE macro now defines an empty function called IMPLEMENT_MODULE_{ModuleName}, to which we force a reference to via the linker command line. This behavior can be disabled on a per-module basis by setting bRequiresImplementModule = false from a .build.cs file.
#rb none
#ROBOMERGE-OWNER: ryan.gerleve
#ROBOMERGE-AUTHOR: ben.marsh
#ROBOMERGE-SOURCE: CL 4827582 in //UE4/Main/...
#ROBOMERGE-BOT: ENGINE (Main -> Dev-Networking)
[CL 4830013 by ben marsh in Dev-Networking branch]