Simon ‘corecode’ Schubert has removed GCC 3.4 and Kerberos 5/Heimdal from the base system.  Kerberos hasn’t been building as part of base for a while, and is available in pkgsrc.  It was also the last item that requires GCC 3.4, so buildworlds are little quicker now.  (Cross your fingers that GCC 4.2 the current version doesn’t break somehow.)