Renamed _Predicate to FunctionTestCase and improved documentation.
Renamed _Predicate to FunctionTestCase and improved documentation.

* subversion/tests/cmdline/svntest/testcase.py (FunctionTestCase): New
  class, renamed from _Predicate.  Also improved the class and method
  docstrings.

  (create_test_case): Construct class using new name.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@859355 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion