Improve the docstring for svn_opt_parse_path, so that doxygen will format the result more cleanly.
Improve the docstring for svn_opt_parse_path, so that doxygen
will format the result more cleanly.

* subversion/include/svn_opt.h
  (svn_opt_parse_path): Escape the @'s that need it and improve the
    brief description so that it does not end nonsensically.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@849803 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion