[9] Review request for 8169589: [macosx] Activating a JDialog puts to back another dialog

[dmitry markov]

Hello,

Could you review a fix for jdk9, please?
    bug: https://bugs.openjdk.java.net/browse/JDK-8169589
    webrev: http://cr.openjdk.java.net/~dmarkov/8169589/webrev.00/

Problem description:
Current implementation of CPlatformWindow.orderAboveSiblings() just 
recursively pops up the windows from ‘active’ parent-child window chain. 
At the same time other child windows (which are not in active chain) 
stayed ‘untouched’ and may be placed behind their nearest parent/owner.

Fix:
CPlatformWindow.orderAboveSiblings() should be modified. It has to take 
into account that a window may own more than one child window.

Note: JCK tests passed on the build with the fix.

Thanks,
Dmitry