As long as we're exporting month_snames we might as well make use of it.

And if we're going to do that it seems silly not to export day_snames
and make use of that.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@80387 13f79535-47bb-0310-9956-ffa450edef68