[9] Review request for 8090176: Pisces software renderer shows incomplete border images in particular situation

[Jim Graham]

JBS: https://bugs.openjdk.java.net/browse/JDK-8090176
webrev for 9u: http://cr.openjdk.java.net/~flar/JDK-8090176/webrev.9u.01/

The webrev is prepared for 8u, but I will be holding off on submitting that for backport review until the fix has baked 
in the 9u-dev repo for a couple of weeks...

			...jim