hg: openjfx/10-dev/rt: 8184077: Resolve Singleton TODO

[victor.drozdov at oracle.com]

Changeset: f64e758c3bc0
Author:    vdrozdov
Date:      2017-07-11 16:04 -0700
URL:       http://hg.openjdk.java.net/openjfx/10-dev/rt/rev/f64e758c3bc0

8184077: Resolve Singleton TODO
Reviewed-by: cbensen

! modules/jdk.packager.services/src/main/java/jdk/packager/services/singleton/SingleInstanceImpl.java
! modules/jdk.packager.services/src/main/java/jdk/packager/services/singleton/SingleInstanceService.java