SWIG Python tidying.
SWIG Python tidying.

* subversion/bindings/swig/include/svn_types.swg: Widen the application of
  '%typemap(out) SWIGTYPE *' to include 'void *' and 'SWIGTYPE []', as
  nearby pointer-related typemaps do. Introduce new typemap name POINTER_TYPES
  to promote consistency, use this instead of POOLINIT, and delete some
  far-to-obvious-to-be-useful comments.

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