* www/hacking.html   (exception-handling): Add some notes about tracing and the     svn_error_return() macro.
* www/hacking.html
  (exception-handling): Add some notes about tracing and the
    svn_error_return() macro.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@877401 13f79535-47bb-0310-9956-ffa450edef68

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