Fixed memory leak by removing all the listeners in dispose(); This PR depends on a new internal class ListenerHelper, a replacement for LambdaMultiplePropertyChangeListenerHandler. See https://github.com/openjdk/jfx/pull/908
------------- Commit messages: - Merge remote-tracking branch 'origin/master' into - Merge branch '8294809.listener.helper' into 8295175.splitpaneskin.with.helper - 8294809: generics - Merge branch '8294809.listener.helper' into 8295175.splitpaneskin.with.helper - 8294809: is alive - Merge branch '8294809.listener.helper' into 8295175.splitpaneskin.with.helper - Revert "8294809: removed weak listeners support" - Merge branch '8294809.listener.helper' into 8295175.splitpaneskin.with.helper - 8294809: removed weak listeners support - 8295175: rebuild dividers - ... and 16 more: https://git.openjdk.org/jfx/compare/3376228a...97995ec8 Changes: https://git.openjdk.org/jfx/pull/911/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=911&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8295175 Stats: 70 lines in 2 files changed: 31 ins; 18 del; 21 mod Patch: https://git.openjdk.org/jfx/pull/911.diff Fetch: git fetch https://git.openjdk.org/jfx pull/911/head:pull/911 PR: https://git.openjdk.org/jfx/pull/911
