Request for review (s) - 8155948: Add message for CMS deprecation for some internal builds

[Jon Masamitsu]

Adds the support to emit a deprecation message in some builds.

https://bugs.openjdk.java.net/browse/JDK-8155948

A data structure is moved to a header file to allow
sharing and a stub function is added which can be
specialized for different builds.

http://cr.openjdk.java.net/~jmasa/8155948/webrev.00/

Thanks.

Jon