Review for font fallback change RT-35978

[David Hill]

jira:       https://javafx-jira.kenai.com/browse/RT-35978
webrev: http://cr.openjdk.java.net/~ddhill/RT-35978

The change is for Embedded Arm font fallback, simplifying the determination of where the jre/lib/fonts will be found.
I switched to using the java.home property as it provides the desired information with greater simplicity and accuracy than the previous mechanism.

I also would appreciate an associated Wiki rework for this topic: https://wiki.openjdk.java.net/display/OpenJFX/Font+Setup

-- 
David Hill <David.Hill at Oracle.com>
Java Embedded Development

"If you want to catch something, running after it isn't always the best way."
-- Lois McMaster Bujold, "Borders of Infinity", 1989