ap_dupfile (specifically dup2) is not available in a general form under Windows.

ap_dupfile (specifically dup2) is not available in a general form under Windows.
So use SetStdHandle directly. A single call to ap_dup2stderr() (or similar) could
replace the entire chunk of code in the #ifdef #else #endif block.  Ryan didn't
want to put this speciality function into APR, but we could put it into os.c
if folks are interested.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@84624 13f79535-47bb-0310-9956-ffa450edef68