PR 54596 part 2: IIS: Fix using relative file names
in config with ".." path segments that go up the
directory hierarchy higher than the starting point
of the relative file name.

This needs more testing. I have only tested
it using themerge code on Unix, because I still
need to recreate a compilation environment for
the ISAPI redirector on Windows.


git-svn-id: https://svn.apache.org/repos/asf/tomcat/jk/trunk@1647684 13f79535-47bb-0310-9956-ffa450edef68