<AWT Dev> RFR: 8256465: [macos11] Java frame and dialog presented full screen freeze application [v7]

[Tejpal Rebari]

> Hi All,
> Please review the following fix for jdk17.
> 
> Issue : On MacOS 11 Java Frame and JDialog application is freezing  in Full Screen  when the System Preference -> General -> Prefer Tabs is set to "Full Screen". It is also freezing in normal screen when Prefer Tabs is set to "Always".
> It doesn't freeze when the Prefer tabs is set to "never".
> 
> Fix : The default value of allowsAutomaticWindowTabbing is 0/NO in MacOS prior to bigSur(11)  
> (in the AWTWindow.m file),  so the issue is not seen in mac os 10.13 10.14 and 10.15.
> From MacOS 11 onwards  this value is set to 1/YES and the issue is seen.
> This issue can also be reproduced in MacOS 10.15 by setting setAllowsAutomaticWindowTabbing to true in the AWTWindow.m file.
> 
> Fix is to set allowsAutomaticWindowTabbing to No for all the MacOS release staring from 10.12.
> The allowsAutomaticTabbing was introduced in MacOS 10.12 but the default value changed in macos11.
> 
> Test : Added a manual test and tested on MacOS 10.15 and 11.
> All the internal tests run are green.

Tejpal Rebari has updated the pull request incrementally with two additional commits since the last revision:

 - make string final
 - doPrivileged to the system.getproperty

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3407/files
  - new: https://git.openjdk.java.net/jdk/pull/3407/files/a09aea52..f2a9198e

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3407&range=06
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3407&range=05-06

  Stats: 11 lines in 1 file changed: 1 ins; 7 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3407.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3407/head:pull/3407

PR: https://git.openjdk.java.net/jdk/pull/3407