related to this and
http://svn.apache.org/viewvc?rev=1782482&view=revwhat exactly are we defining as the difference between unsetting an envar and setting it as "empty"?
related to this and
http://svn.apache.org/viewvc?rev=1782482&view=revwhat exactly are we defining as the difference between unsetting an envar and setting it as "empty"?