Some basic adjustments to a couple deprecated functions.
Some basic adjustments to a couple deprecated functions.

* subversion/libsvn_wc/deprecated.c:
  (svn_wc_add3): use db_read_kind() rather than the node wrapper, then
    tighten the scope of ADM_ACCESS
  (svn_wc_get_ancestry): rewrite in terms of internal_get_ancestry so that
    we don't need a WC_CTX.

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