Resolve a regression since 1.7.X where calling 'svn status' on a missing file
on a case-insensitive filesystem doesn't return the same information as
on its parent directory.

In <= 1.7 we always handled the root as a single target within its parent,
hiding all its siblings. This reverts us to this behavior on the only
point where we really need this for consistent output.

* subversion/libsvn_wc/status.c
  (stat_wc_dirent_case_sensitive): New function.
  (svn_wc__internal_walk_status,
   internal_status):  Use stat_wc_dirent_case_sensitive when checking the
                      target inside a working copy.

* subversion/tests/cmdline/stat_tests.py
  (status_case_changed): New test.
  (test_list): Add test.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1434054 13f79535-47bb-0310-9956-ffa450edef68