hg: openjfx/10-dev/rt: 8181116: Ability to change milestone to fcs without updating repo

[kevin.rushforth at oracle.com]

Changeset: 854847265def
Author:    kcr
Date:      2017-08-31 11:19 -0700
URL:       http://hg.openjdk.java.net/openjfx/10-dev/rt/rev/854847265def

8181116: Ability to change milestone to fcs without updating repo
Reviewed-by: prr, asaha

! build.gradle
! build.properties