[8u] Review request: 8145604 & 8145602 : Remove QTKit based media player

[Kevin Rushforth]

Hi Alexander,

Please review the following backports to JDK 8u of two related fixes 
that went into JDK 9:

https://bugs.openjdk.java.net/browse/JDK-8145604
http://cr.openjdk.java.net/~kcr/8145604/8u/webrev.00/

https://bugs.openjdk.java.net/browse/JDK-8145602
http://cr.openjdk.java.net/~kcr/8145602/8u/webrev.00/

These are needed to allow FX 8u-dev to build on macOS 10.12 and Xcode 
9.1, which in turn are needed to build the latest WebKit (which is in 
the process of being backported).

Details are in JBS.

-- Kevin