10080 smatch Makefile changes for usr/src/cmd

*** 24,33 ****
--- 24,34 ----
  # Copyright (c) 1997-1999 by Sun Microsystems, Inc.
  # All rights reserved.
  #
  # Copyright 2015 Nexenta Systems, Inc.  All right reserved.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  .KEEP_STATE:
  
  PROG    =       spec2trace
  
*** 47,51 ****
--- 48,56 ----
  
  CERRWARN +=     -_gcc=-Wno-parentheses
  CERRWARN +=     -_gcc=-Wno-switch
  CERRWARN +=     -_gcc=-Wno-unused-variable
  CERRWARN +=     -_gcc=-Wno-unused-label
+ 
+ # not linted
+ SMATCH=off
+