[7u40] Request for phase 2 approval for CR 8019155 - Update makefiles with correct jfr packages

[Staffan Larsen]

This is a small fix for make/common/Release.gmk which needs to be updated to include the package jdk.internal.jfr.events in jfr.jar.

webrev: http://cr.openjdk.java.net/~sla/8019155/webrev.00/
review thread: http://mail.openjdk.java.net/pipermail/serviceability-dev/2013-June/010325.html
reviewed by: Tim Bell, David Holmes

Thanks,
/Staffan