Clean up pool destroy process.
Clean up pool destroy process.

* subversion/bindings/swig/core.i
  (apr_pool_wrapper_destroy): New function.
  (~apr_pool_wrapper_t,
   apr_pool_wrapper_destroy_children): Use apr_pool_wrapper_destroy.
  (apr_pool_wrapper_remove_from_parent): Forget a pointer to parent.

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