Convert gather_children() to use PDH and relpath instead of DB and abspath.
Convert gather_children() to use PDH and relpath instead of DB and abspath.

* subversion/libsvn_wc/wc_db.c
  (gather_children): Take PDH and relpath params instead of DB and abspath.
  (svn_wc__db_base_get_children, svn_wc__db_read_children): Convert DB and
    abspath to PDH and relpath before calling gather_children().
  (svn_wc__db_op_copy): Adjust a call.

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