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

internationalization.

Backports: 1611165,1611169
Reviewed by: wrowe, gsmith


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1681266 13f79535-47bb-0310-9956-ffa450edef68