Fix documentation of svn_path_is_canonical.
Fix documentation of svn_path_is_canonical.

Suggested by: gstein

* subversion/include/svn_path.h
  (svn_path_is_canonical): Document pool usage. Even though the pool won't be
   used anymore in 1.6, it'll still be needed when using <1.5 libs.

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