RFR: 8268120: Allow hardware cursor to be used on Monocle-EGL platforms [v2]

[Johan Vos]

> Add EGL cursor implementation (Java + native) and the link to low-level drivers.
> Fix for JDK-8268120

Johan Vos has updated the pull request incrementally with one additional commit since the last revision:

  fix typo after last-minute inversion (make hwcursor default instead of swcursor)

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Changes:
  - all: https://git.openjdk.java.net/jfx/pull/527/files
  - new: https://git.openjdk.java.net/jfx/pull/527/files/a6dfe628..2a86c4a4

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jfx&pr=527&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jfx&pr=527&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/527.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/527/head:pull/527

PR: https://git.openjdk.java.net/jfx/pull/527