<AWT Dev> [9] Review Request: 8143054 [macosx] KeyEvent modifiers do not contain information about mouse buttons

[Sergey Bylokhov]

Hello.
Please review the fix for jdk9.

On macosx when we create a KeyEvent we ignore the mouse state of all 
mouse buttons, which means that mouse modifiers are missing.
The only KeyEvent is affected, because when we convert NS modifiers to 
java modifiers we use nsToJavaKeyModifiers(), but in all other cases we 
use nsToJavaMouseModifiers() which is the same but adds mouse modifiers.

In the fix:
- The button parameter of nsToJavaMouseModifiers() was removed because 
it was unused.
- nsToJavaMouseModifiers() was renamed to nsToJavaModifiers() and now is 
used when keyEvent is generated.
- nsToJavaKeyModifiers() was removed because it unused now.

The similar bug for extended(id>=3) mouse buttons was filed for linux:
https://bugs.openjdk.java.net/browse/JDK-8143240

Bug: https://bugs.openjdk.java.net/browse/JDK-8143054
Webrev can be found at: http://cr.openjdk.java.net/~serb/8143054/webrev.00

-- 
Best regards, Sergey.