Refactor magic strings into a constant.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594245 13f79535-47bb-0310-9956-ffa450edef68
Javadoc: Consider these classes private to Log4j.


git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594246 13f79535-47bb-0310-9956-ffa450edef68
Refactor magic strings into a constant.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594247 13f79535-47bb-0310-9956-ffa450edef68
Refactor magic strings into a constant.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594248 13f79535-47bb-0310-9956-ffa450edef68
Refactor magic strings into a constant.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594249 13f79535-47bb-0310-9956-ffa450edef68
Refactor magic strings into a constant.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594250 13f79535-47bb-0310-9956-ffa450edef68
Refactor magic strings into a constant.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594251 13f79535-47bb-0310-9956-ffa450edef68
Refactor magic strings into a constant.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594252 13f79535-47bb-0310-9956-ffa450edef68
Remove unused imports.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594253 13f79535-47bb-0310-9956-ffa450edef68