Stabilization fixes from WebKitGTK 2.36.7. Verified drt and unit tests on Mac, Windows and Linux platforms.
------------- Commit messages: - Cherry-pick WebKit 614.1 stabilization fixes Changes: https://git.openjdk.org/jfx/pull/885/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=885&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8292609 Stats: 1228 lines in 111 files changed: 848 ins; 102 del; 278 mod Patch: https://git.openjdk.org/jfx/pull/885.diff Fetch: git fetch https://git.openjdk.org/jfx pull/885/head:pull/885 PR: https://git.openjdk.org/jfx/pull/885
