Removed useless check terms, added handling of DOS dir format.

Note that selection of a directory whose name contains spaces is still not
possible. That still needs to be fixed. File selection is OK.

Example:

ftp://emwac.ed.ac.uk/microsoft/tools


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77882 13f79535-47bb-0310-9956-ffa450edef68