Fix a parameter name.
Fix a parameter name.

* subversion/include/svn_client.h
  (svn_client_blame): Use 'path_or_url' for parameter name, so
    prototype matches definition.

Suggested by: Masaru Tsuchiyama <tsuchiyama@asahi-net.email.ne.jp>

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