Part of issue #1928:  fix gi-normous memory leak in 'svn propset -R URL'. (Of course, the command still isn't streamy, but that's another problem.)
Part of issue #1928:  fix gi-normous memory leak in 'svn propset -R URL'.
(Of course, the command still isn't streamy, but that's another problem.)

* libsvn_client/prop_commands.c 
  (remote_proplist): add a 'scratchpool' parameter.  Use scratchpool
  to do all recursion, looping, and repository access, while using
  original pool only for returning data.

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