Sys calls are called ipc calls now

- the syscalls are pretty much just ipc calls, however, sendrec() is
  used to implement system task (sys) calls

- sendrec() won't be used anymore for this, therefore ipc calls will
  become pure ipc calls

kernel/proc.c

@@ -283,7 +283,7 @@ check_misc_flags:
 /*===========================================================================*
  *				sys_call				     * 
  *===========================================================================*/
-PUBLIC int sys_call(call_nr, src_dst_e, m_ptr, bit_map)
+PUBLIC int do_ipc(call_nr, src_dst_e, m_ptr, bit_map)
 int call_nr;			/* system call number and flags */
 int src_dst_e;			/* src to receive from or dst to send to */
 message *m_ptr;			/* pointer to message in the caller's space */