Fix some annoying doubled up sentences that resulted from us turning on the  REPEAT_BRIEF setting in doxygen.conf.  Also, tweak some comments while I'm  here.
Fix some annoying doubled up sentences that resulted from us turning on the 
REPEAT_BRIEF setting in doxygen.conf.  Also, tweak some comments while I'm 
here.

* subversion/include/svn_client.h
  (svn_client_ctx_t::auth_baton): tweak comment.

  (svn_client_checkout, svn_client_update, svn_client_switch, svn_client_add, 
   svn_client_import, svn_client_commit, svn_client_diff, svn_client_merge, 
   svn_client_cleanup, svn_client_revert, svn_client_resolve, svn_client_copy, 
   svn_client_move, svn_client_propset, svn_client_revprop_set, 
   svn_client_export, svn_client_cat): fix doubled up sentences.

  (svn_client_url_from_path): add the double star so that doxygen will see 
   this comment, and make the comment style consistent with the rest of this 
   file.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@845099 13f79535-47bb-0310-9956-ffa450edef68

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