(svn_ra_plugin_t):  clearer variable names.
(svn_ra_plugin_t):  clearer variable names.

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