- m_join.c:ms_join(): don't allow servers to join channels


git-svn-id: svn://svn.ircd-hybrid.org/svnroot/ircd-hybrid/branches/8.1.x@3619 82007160-df01-0410-b94d-b575c5fd34c7
- m_sjoin.c:ms_sjoin(): hardened test to make sure SJOINs are really
  only processed if sent by a server


git-svn-id: svn://svn.ircd-hybrid.org/svnroot/ircd-hybrid/branches/8.1.x@3622 82007160-df01-0410-b94d-b575c5fd34c7