Code Review Request For RT-39008: [Mac] Glass shouldn't use Prism's context for creating or destroying native rendering resources

[Chien Yang]

Hi Dave, Kevin and Morris,

Please review the proposed fix.

JIRA: https://javafx-jira.kenai.com/browse/RT-39008
Webrev: http://cr.openjdk.java.net/~ckyang/RT-39008/webrev.00/

Thanks,
- Chien