Revise dependencies in container/catalina/pom.xml for building Tomcat common classes (Catalina)

Currently, in the default build (mvn install), this will be build with default dependencies and the same resulting jar be used with all Tomcat versions (problem #1).

If profile TC7 is defined (mvn install -PTC7) the tomcat 7 Jars are used (but with jboss servlet api jar - problem #2).

However, for Tomcat 8 this no longer compiles, so this needs to be revised a bit. I suggest as we go farther, we keep moving out non-common (i.e. no compilable on all versions) code to respective implementations and only keep the common code that compiles for all versions (problem #3).