[7u6] Review request for 7170657: [macosx] There seems to be no keyboard/mouse action to select non-contiguous items in List

[Sergey Bylokhov]

Hi Everyone,
Please review the fix.This is backport from jdk8 to jdk7u6.
Bug in SwingUtilities.convertMouseEvent().This method does not convert 
extended state of the event.

jdk8 changeset: http://hg.openjdk.java.net/jdk8/awt/jdk/rev/c277657e5e10
Bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7170657
Webrev can be found at: http://cr.openjdk.java.net/~serb/7170657/webrev.01/

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Best regards, Sergey.