* subversion/include/svn_error.h
  (SVN_INT_ERR): Update the doc string for clarity. Declare as deprecated,
    as it no longer suits our needs nor general third-party needs.

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1544142 13f79535-47bb-0310-9956-ffa450edef68