Teach test suite to detect nested 'Skipped' notifications.  See
http://svn.haxx.se/dev/archive-2013-01/0035.shtml

* subversion/tests/cmdline/svntest/wc.py

  (_re_parse_skipped): Add a new group to the regex which matches the
   'Skipped', 'Skipped target', and 'Skipped missing target' notifications.

  (State.from_skipped): Initialize StateItem with a verb corresponding to the
   variants of the skip notifications.

* subversion/tests/cmdline/merge_authz_tests.py

  (mergeinfo_and_skipped_paths): Add appropriate verb to expected skip(s).

* subversion/tests/cmdline/merge_reintegrate_tests.py

  (reintegrate_on_shallow_wc): Add appropriate verb to expected
   skip(s).

* subversion/tests/cmdline/merge_tests.py

  (merge_skips_obstructions,
   merge_into_missing,
   skipped_files_get_correct_mergeinfo): Add appropriate verb to expected
   skip(s).

  (merge_to_sparse_directories): As above, but also add expected skip
   notifications that we previously missed and still allowed the test to
   pass.

* subversion/tests/cmdline/merge_tree_conflict_tests.py

  (tree_conflicts_and_obstructions,
   tree_conflicts_merge_edit_onto_missing,
   tree_conflicts_merge_del_onto_missing): Add appropriate verb to
   expected skip(s).

* subversion/tests/cmdline/patch_tests.py

  (patch_absolute_paths,
   patch_add_new_dir,
   patch_same_twice,
   patch_delete_and_skip): Add appropriate verb to expected skip(s).


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1428996 13f79535-47bb-0310-9956-ffa450edef68