Continue revamping the property internals to align with our desired property interfaces.
Continue revamping the property internals to align with our desired
property interfaces.

* subversion/libsvn_wc/props.c:
  (load_pristine_props): helper function around load_props, along with
    some testing functionality for the migration to in-db properties.
    factored out of load_all_props().
  (load_actual_props): helper function around load_props, along with some
    testing functionality for the migration to in-db properites. factored
    out of load_all_props().
  (load_all_props): removed.
  (svn_wc__merge_props, svn_wc__internal_propset): remove load_all_props
    in favor of a couple calls to load_pristine_props and load_actual_props
  (svn_wc__get_actual_props): switch to load_actual_props
  (svn_wc__get_pristine_props): switch to load_pristine_props
  (svn_wc__has_props): lose load_all_props in favor of a call to
    load_pristine_props and load_actual_props, optimizing for "props
    exist" as soon as we see them.
  (svn_wc__internal_propdiff): switch load_all_props to
    load_pristine_props, and if we need changes, then throw in a separate
    call to load_actual_props.

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