[9] Review request: JDK-8154250: [packager] Mac Bundle Plugins directory rename

[Victor Drozdov]

Chris,

Please review the changes about renaming PlugIns directory.

JIRA: https://bugs.openjdk.java.net/browse/JDK-8154250
Webrev: http://cr.openjdk.java.net/~vdrozdov/JDK-8154250/webrev.00/

--Victor