RFR: 8297213: Robot capture tests should move mouse to corner of screen [v2]

[Andy Goryachev]

> Added Util.parkCursor(Robot) method to move the cursor to lower left corner (while avoiding dock, tray, or active corners).

Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:

  8297213: review comments

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Changes:
  - all: https://git.openjdk.org/jfx/pull/955/files
  - new: https://git.openjdk.org/jfx/pull/955/files/55a022c5..0e525b2f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=955&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=955&range=00-01

  Stats: 8 lines in 1 file changed: 0 ins; 8 del; 0 mod
  Patch: https://git.openjdk.org/jfx/pull/955.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/955/head:pull/955

PR: https://git.openjdk.org/jfx/pull/955