third element, this is so we can match
"foo@REALM<SPC>all<SPC><SPC>*@REALM", before it just matched
"foo@REALM<SPC>all<SPC>*@REALM", but that is kind of luck since what
really happen was that the last <SPC> was stamped out, and the it
never strtok_r never needed to parse over it.
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@14157 ec53bebd-3082-4978-b11e-865c3cabbd6b