[OpenJDK 2D-Dev] RFR: 8u20 backport of 8029008: JNI warning in sun/font

[Phil Race]

Please sanity check this backport ..

Code : http://cr.openjdk.java.net/~prr/8029008.8u20/
Bug https://bugs.openjdk.java.net/browse/JDK-8029008

JDK 9 changeset :- 
http://hg.openjdk.java.net/jdk9/client/jdk/rev/f0f8960831c1

Note that this also includes the fix to the typo that for JDK9 was added 
here
http://cr.openjdk.java.net/~pchelko/9/8038217/webrev/src/share/native/sun/font/sunFont.c.sdiff.html

I ran SwingSet, Font2DTest & Java2D demo.

-phil.