also, inform developer about the long link time
#jira UE-69632 Multithreaded adds 8.5 minutes to Launch On
#rnx
#rb none
#ROBOMERGE-OWNER: lina.halper
#ROBOMERGE-AUTHOR: nick.shin
#ROBOMERGE-SOURCE: CL 4925927 in //UE4/Release-4.22/... via CL 4925930
#ROBOMERGE-BOT: ANIM (Main -> Dev-Anim)
[CL 5018899 by nick shin in Dev-Anim branch]