DDF-3 Code review updates: updated security constants, updated SimpleAuthzRealm to container-managed configuration.

Metacard.java: updated security keys - replace match one/all with generic security constant.
Updated security-pdp-java feature description.
Updated javadocs for almost all the security-core-api files.
SimpleAuthzRealm: added security logging statements, updated from component-managed to container-managed (with updates to setters),
  fixed backwards description in metatype.xml file for matchOne, matchAll.
Updated tests to reflect changes in configuration methods.