Merge r1423933 from trunk:

On NetWare skip these unsupported function prototypes.

Submitted by: fuankg
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1575914 13f79535-47bb-0310-9956-ffa450edef68