[Rev 01] RFR: 8232210: Update Mesa 3-D Headers to version 19.2.1

[Kevin Rushforth]

The pull request has been updated with additional changes.

----------------

Added commits:
 - 5686a382: Update third-party license file to remove unneeded lines

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/26/files
  - new: https://git.openjdk.java.net/jfx/pull/26/files/7a520adc..5686a382

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/26/webrev.01
 - incr: https://webrevs.openjdk.java.net/jfx/26/webrev.00-01

  Issue: https://bugs.openjdk.java.net/browse/JDK-8232210
  Stats: 13 lines in 1 file changed: 0 ins; 13 del; 0 mod
  Patch: https://git.openjdk.java.net/jfx/pull/26.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/26/head:pull/26

PR: https://git.openjdk.java.net/jfx/pull/26