Inline ConstantPool.getConstantString() method.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1624645 13f79535-47bb-0310-9956-ffa450edef68
Remove class_name argument from constructor, as Tomcat does not provide the name.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1624647 13f79535-47bb-0310-9956-ffa450edef68
Remove branch that is not used by Tomcat. Thanks to Cobertura coverage report.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1624648 13f79535-47bb-0310-9956-ffa450edef68
Memory efficiency: Use a shared emptySet() as the value for JavaClassCacheEntry.sciSet when there are no SCIs for a class.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1624655 13f79535-47bb-0310-9956-ffa450edef68