Move all classes from org.apache.logging.log4j.core.helpers.lang to org.apache.logging.log4j.core.helpers.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594337 13f79535-47bb-0310-9956-ffa450edef68
Move all classes from org.apache.logging.log4j.core.helpers.lang to org.apache.logging.log4j.core.helpers.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1594341 13f79535-47bb-0310-9956-ffa450edef68