- Use apr_file_mktemp() and rename the header data file to its final location,...

- Use apr_file_mktemp() and rename the header data file to its final location, instead of opening it and then writing it out as we go.  Should prevent race conditions on busy servers.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@190043 13f79535-47bb-0310-9956-ffa450edef68