<AWT Dev> [8] Review request for 7174704: [macosx] New issue in 7u6 b12: HeadlessPrintingTest failure

[Anthony Petrov]

Hello,

Please review a long-awaited back-port of a fix for 
https://bugs.openjdk.java.net/browse/JDK-7174704 at:

http://cr.openjdk.java.net/~anthony/8-61-headlessPrinting-7174704.0/

It is not a direct back-port because the code in JDK8 slightly differs 
from 7u, but the basic idea is the same: we always load the lwawt 
dynamic library on Mac, regardless of the headless/headful mode.

Also with this fix I remove support for the undocumented AWT_TOOLKIT 
environment variable. It's become obsolete with removal of the MToolkit 
from JDK7. For selecting custom toolkits users still can use the 
documented -Dawt.toolkit=<class-name> system property.

I've tested the fix with a test mentioned in the bug report, and it 
passes well.

--
best regards,
Anthony