6649542: Document explicitly in registerMBean etc that MBeanServerNotification is emitted Summary: Make spec more readable by adding cross-references. Suggested by Andrew Haley. Reviewed-by: dfuchs

Merge

6672804: First line in com/sun/management/package.html is broken Summary: Fixed the typo in package.html Reviewed-by: jjh

6658779: Regression: HotspotDiagnosticMXBean.getDiagnosticOptions() throws NullPointerException Summary: Add a null check for the VM option string Reviewed-by: alanb, tbell