Resolve a TODO in the testsuite introduced in 2009: Make the working copy
status processing continue in externals.

This patch relies on the status output fix in r1434750.

* subversion/tests/cmdline/externals_tests.py
  (cannot_move_or_remove_file_externals,
   relegate_external,
   exclude_externals,
   commit_include_externals,
   dir_external_with_dash_r_only): Update assumptions.

* subversion/tests/cmdline/svntest/wc.py
  (from_status): Don't stop processing output after "Performing" line. Apply the same
    prev_status, prev_tree_conflict trick as from the update output processing.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1434783 13f79535-47bb-0310-9956-ffa450edef68