Could you add a "-Dsolr" option to the shell scripts java command line?

It is a courtesy to sysadmins, that can grep more easily through the
"ps" output and trace the solr executable (since the name start.jar is
not really telling)

It could even be described in the docs at the top of the service script,
so that sysadmins know how to customize it if they have eg many solr
instances up at the same time