Expand mergeinfo_tests.py 7 to cover the use cases where the targets of the svn mergeinfo subcommand are URLs with explicit and inherited mergeinfo.
Expand mergeinfo_tests.py 7 to cover the use cases where the targets of the
svn mergeinfo subcommand are URLs with explicit and inherited mergeinfo.

Note: This test still passes, but now covers some known problem areas in
forthcoming issue #3242 fixes.

* subversion/tests/cmdline/mergeinfo_tests.py
  (mergeinfo_on_pegged_wc_path): Tweak tests as above.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion