[9] Review request for JDK-8151136: [macosx] According to the description, the case is failed

[Manajit Halder]

Hi All,

Kindly review the fix for JDK9.

Bug: 
        https://bugs.openjdk.java.net/browse/JDK-8151136 
<https://bugs.openjdk.java.net/browse/JDK-8151136>

Webrev: 
        http://cr.openjdk.java.net/~arapte/manajit/8151136/webrev.00/ 
<http://cr.openjdk.java.net/~arapte/manajit/8151136/webrev.00/>

Issue: 
[macosx] According to the description,the case is failed (AltGraph key is not 
supported on OS X).

Cause: 
        On OS X AltGraph functionality was not implemented. 

Information on AltGraph Key on OS X:
        On OS X there is no key defined for AltGraph on the Keyboard. As per 
wikipedia link https://en.wikipedia.org/wiki/AltGr_key 
<https://en.wikipedia.org/wiki/AltGr_key> Option key has function similar to 
the AltGr key. But Option is also Alt key on OS X. 

Fix: 
        Right Option key is defined to behave as AltGraph key on OS X. AltGraph 
functionality is added for left key. 

Regards,
Manajit