Re-order to simplify later refactoring

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1541951 13f79535-47bb-0310-9956-ffa450edef68
Rename descriptor representations to avoid name clashes with
implementations.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1541952 13f79535-47bb-0310-9956-ffa450edef68
Avoid the need for a bunch of null checks.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1541953 13f79535-47bb-0310-9956-ffa450edef68
Check-point (TLD support broken)

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1541954 13f79535-47bb-0310-9956-ffa450edef68
Use cached result of parsing TLDs rather than re-parsing.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1541955 13f79535-47bb-0310-9956-ffa450edef68
Remove unused parameter

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1541957 13f79535-47bb-0310-9956-ffa450edef68
Fix a NPE

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1541958 13f79535-47bb-0310-9956-ffa450edef68
Remove unused code

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1541960 13f79535-47bb-0310-9956-ffa450edef68
Check the parsed TLD cache entries are not stale.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1541962 13f79535-47bb-0310-9956-ffa450edef68
Fix NPE

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1541963 13f79535-47bb-0310-9956-ffa450edef68