Prevent the client from getting, setting, or deleting wcprops.
Prevent the client from getting, setting, or deleting wcprops.

See http://subversion.tigris.org/servlets/ReadMsg?list=dev&msgNo=87443
<FE5A1B70-594A-11D9-BE9C-000A95D699A0@collab.net> for details.

* subversion/libsvn_client/prop_commands.c
  (error_if_wc_prop): New helper function.
  (svn_client_propset2, svn_client_propget2): Call it.

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