Switch to standard Java debug options -agentlib

AS7 currently has the Java debug options
-Xrunjdwp:transport=dt_socket,address=8787,server=y,suspend=n

This uses non-standard options, which may be removed in future JDK, and
may not work with other vendors' JDK.

How about switching to use the standard options, to make it easier to
maintain and port?
-agentlib:jdwp=transport=dt_socket,address=localhost:8787,server=y,suspend=n