Binary package “tomcat7-common” in ubuntu trusty

Servlet and JSP engine -- common files

 Apache Tomcat implements the Java Servlet and the JavaServer Pages (JSP)
 specifications from Sun Microsystems, and provides a "pure Java" HTTP web
 server environment for Java code to run.
 .
 This package contains common files needed by the tomcat7 and tomcat7-user
 packages (Tomcat 6 scripts and libraries).