8u40 RFR: RT-39238: [media] Mac native platform code doesn't compile with parfait compilers

[David DeHaven]

Kevin, Steve, can you please review my build system changes?

Webrev:
http://cr.openjdk.java.net/~ddehaven/RT-39238/rt.0/

JIRA Issue:
https://javafx-jira.kenai.com/browse/RT-39238

-DrD-