Introduce a new helper in the import code which gets and filters the children of an imported directory.
Introduce a new helper in the import code which gets and filters the children
of an imported directory.

* subversion/libsvn_client/commit.c
  (get_filtered_children): New.
  (import_dir): Use the helper, separating the filtering from the actual
    importing.

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