Include the proper header file (under X/Open, at least) for ntohs() in

a couple of modules.  This lets us link-edit successfully again on OS/390.
(OS/390 only has the macro form of these functions.)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85580 13f79535-47bb-0310-9956-ffa450edef68