Some more pool cleanup in libsvn_client/merge.c.
Some more pool cleanup in libsvn_client/merge.c.

* subversion/libsvn_client/merge.c

  (properties_same_p,
   make_merge_conflict_error):
   Rename sole pool argument to scratch_pool to better reflect its purpose.

  (inherit_implicit_mergeinfo_from_parent): Replace single pool argument
   with scratch and result pools.

  (record_skips,
   drive_merge_report_editor): Rename sole pool argument to scratch_pool 
   to better reflect its purpose.  Add an iterpool for unbounded iteration.

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