Following up to the recent work on adding a stack trace to errors, create a new macro which returns a wrapped error.  Use that new macro in the definition of SVN_ERR().
Following up to the recent work on adding a stack trace to errors, create
a new macro which returns a wrapped error.  Use that new macro in the
definition of SVN_ERR().

* subversion/include/svn_error.h
  (SVN_ERR): Use SVN_ERR_RETURN(), and let it be conditionally defined.
  (SVN_ERR_RETURN): New macro.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@877398 13f79535-47bb-0310-9956-ffa450edef68

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