Add tests for Python binding of svn.ra.has_capability().
Add tests for Python binding of svn.ra.has_capability().

* subversion/bindings/swig/python/tests/ra.py 
  (test_has_capability): New function.

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