Create and use a local version of svn_wc__db_temp_elide_copyfrom() that takes a PDH and relpath instead of DB and abspath.
Create and use a local version of svn_wc__db_temp_elide_copyfrom() that
takes a PDH and relpath instead of DB and abspath.

* subversion/libsvn_wc/wc_db.c
  (elide_copyfrom): New function, extracted from ...
  (svn_wc__db_temp_elide_copyfrom): ... here, which now calls it.
  (svn_wc__db_op_copy): Use elide_copyfrom().
  (get_copyfrom): Take PDH and relpath instead of DB and abspath.

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