Provide dummy impl of ap_proxy_connect_uds() in case when APR_HAVE_SYS_UN_H is not defined. Just returns APR_ENOTIMPL. This helps symbol export/import handling on Netware and also seems to be more correct, because mod_proxy.h contains ap_proxy_connect_uds() unconditionally.
httpd/httpd/trunk/modules/proxy/proxy_util.c