Plugin system fails to start on Tomcat 7.0.53

2014-04-14 14:59:35,616 localhost-startStop-1 ERROR      [plugin.osgi.factory.OsgiPlugin] Detected an error (BundleException) enabling the plugin 'com.atlassian.activeobjects.activeobjects-plugin' : Unresolved constraint in bundle com.atlassian.activeobjects.activeobjects-plugin [27]: Unable to resolve 27.0: missing requirement [27.0] package; (&(package=javax.servlet)(version>=2.4.0)).  This error usually occurs when your plugin imports a package from another bundle with a specific version constraint and either the bundle providing that package doesn't meet those version constraints, or there is no bundle available that provides the specified package. For more details on how to fix this, see https://developer.atlassian.com/x/mQAN