On the invoke-diff-cmd branch: Ensure that ineligible delimiters that
  have a special end characer are not modified.  Add new test.

* subversion/libsvn_subr/io.c

  (__create_custom_diff_cmd): Ensure that ineligible delimiters that
  have a special end characer are not modified.

* subversion/tests/cmdline/diff_tests.py

  (diff_invoke_external_diffcmd): Add new test.  Change the misleading
  term 'token' to 'delimiter' for consistency.




git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/invoke-diff-cmd-feature@1526609 13f79535-47bb-0310-9956-ffa450edef68