export a few functions so mod_perl's <Perl> config sections work under win32

PR:
Obtained from:
Submitted by:	Doug MacEachern
Reviewed by:	Dean Gaudet


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@80562 13f79535-47bb-0310-9956-ffa450edef68