[Rev 01] RFR: 8089828: RTL Orientation, the flag of a mnemonic is not placed under the mnemonic letter.

[Ajit Ghaisas]

> **Bug :**
> https://bugs.openjdk.java.net/browse/JDK-8089828
> 
> **Root Cause :**
> RIGHT_TO_LEFT NodeOrientation was not considered during mnemonic position calculation.
> 
> **Fix :**
> Corrected code to consider RIGHT_TO_LEFT NodeOrientation while calculating mnemonic position.
> 
> **Testing :**
> Existing manual test is modified to test RTL buttons as well.

Ajit Ghaisas has updated the pull request incrementally with one additional commit since the last revision:

  fix file header comment

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

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/146/files
  - new: https://git.openjdk.java.net/jfx/pull/146/files/a88ed536..6dd5602a

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/146/webrev.01
 - incr: https://webrevs.openjdk.java.net/jfx/146/webrev.00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/146.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/146/head:pull/146

PR: https://git.openjdk.java.net/jfx/pull/146