Clean up embedded abspaths that came along with resource

compilation on win32 (haven't worked out the clean patch
to apr/build/fixwin32mak.pl for this, yet).

This caused no issues in the 2.4.20 package, and does not
block a release.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1738140 13f79535-47bb-0310-9956-ffa450edef68