Fix various parsing bugs with <Dir/Loc/Files> sections. Improve the

error messages generated.  Introduced cmd->end_token to make it easier
to do nested sections with proper error reporting.  (Note that it can't
be used for <IfModule> or <Limit> unfortunately.)

PR#379: <Files> is not allowed within <Location> because it has no effect.

PR#1817: Change <Files> to work with basenames only.  This fixes both
the bug introduced by the wildcarding change (* doesn't match /) and
bugs such as <Files a*b> not working.

PR:             379, 1817


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@80233 13f79535-47bb-0310-9956-ffa450edef68