mpm_winnt: Accept utf-8 (Unicode) service names and descriptions for

internationalization.

Backports: r1611169
Reviewed by: wrowe, gsmith



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1652266 13f79535-47bb-0310-9956-ffa450edef68