[7u6] Request for phase 2 approval for CR 7183251: Netbeans editor renders text wrong on JDK 7u6 build 17

[Phil Race]

Showstopper fix for a regression notably affecting Netbeans text rendering.
Bug: http://bugs.sun.com/view_bug.do?bug_id=7183251
Fix has been requested and approved by by 7u6 release team
Reviewed by Igor Nekrestyanov and Jennifer Godinez
Fix is already in JDK 8 (as well as 6u34) thus this is a back port :
http://mail.openjdk.java.net/pipermail/2d-dev/2012-July/002658.html
Changeset http://hg.openjdk.java.net/jdk8/2d/jdk/rev/ab0b2720a756

-phil.