[PATCH] python bindings typemaps updates

While poking around for the cause of the perl bindings test failures, I
found that the python bindings are slightly out-of-date with regard to
some of the new functions added for 1.5. This patch should fix some of
those warnings.

(This is my first time attempting to anything with the swig bindings,
I'd like to know if I'm at least on the right track.)

[[[
Python bindings: Update some output parameter typemaps.

* subversion/bindings/swig/core.i
  Use MERGEINFO_CATALOG instead of MERGEINFO_HASH for both ruby and
  python interfaces.

* subversion/bindings/swig/include/svn_containers.swg
  Add some additional typemaps for hashes of C strings, and apply
  existing typemaps to additional output parameters. Use
  MERGEINFO_CATALOG instead of MERGEINFO_HASH
]]]