Reduce the number of read transactions in the status walker a bit by using a savepoint around the two most expensive queries in calculating status on an unmodified working copy.
Reduce the number of read transactions in the status walker a bit by using
a savepoint around the two most expensive queries in calculating status on
an unmodified working copy.

* subversion/libsvn_wc/wc_db.c
  (read_children_info_baton_t): New struct.
  (svn_wc__db_read_children_info): Rename to ...
  (read_children_info): ... this to implement svn_wc__db_txn_callback_t.
  (svn_wc__db_read_children_info): New function, calling read_children_info.

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