Refactor Log4jWebInitializer as a LifeCycle called Log4jWebLifeCycle: initialize() becomes start() and deinitialize() becomes stop().

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1596757 13f79535-47bb-0310-9956-ffa450edef68
// comments.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1596758 13f79535-47bb-0310-9956-ffa450edef68
// @formatter:off and on.


git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1596762 13f79535-47bb-0310-9956-ffa450edef68
Javadoc.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1596763 13f79535-47bb-0310-9956-ffa450edef68
Javadoc.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1596764 13f79535-47bb-0310-9956-ffa450edef68