#4363 [HHQ-4220] The Tomcat Plugin should look for its version fil

[Hyperic Team]

http://jira.hyperic.com/browse/HHQ-4220
Currently the Tomcat plugin only checks CATALINA_HOME for its version file. In tc Server/tc Runtime, we do quite a bit of work to make CATALINA_HOME look exactly like Apache Tomcat and put all of the tc Server/tc Runtime specific pieces in CATALINA_BASE. The Tomcat plugin should check both CATALINA_HOME and CATALINA_BASE for its version file.