New in 4.5... dxcmd changes

A number of new features in dxcmd added in 4.5.

Load it with -u, and the set/migrate association types (reference to
string and string to reference) options are available.

Normal load adds at the top level the option (and a command line
reference) for JVM Statistics. It claims to want a filename to write
too, but stdout should work for Nagios plugin. (I am bugging Lothar to
consider adding support to his Nagios plugin.)

The ability to specify the TAO file location is here (It is just an
attribute being modified, but nice having a UI, if you count dxcmd as a