Some changes to the ap_strftime function. We now inform the user of the

length of the string written, and we return a status code.  I expect the
status code to mean a bit more on Windows than it currently does on Unix.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@84376 13f79535-47bb-0310-9956-ffa450edef68