10080 smatch Makefile changes for usr/src/cmd

*** 22,31 ****
--- 22,32 ----
  #
  #
  # Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  # NOTE: awk is oawk.
  
  PROG= nawk
  
*** 40,49 ****
--- 41,53 ----
  CERRWARN += -_gcc=-Wno-unused-label
  CERRWARN += -_gcc=-Wno-parentheses
  CERRWARN += -_gcc=-Wno-unused-variable
  CERRWARN += -_gcc=-Wno-uninitialized
  
+ # not linted
+ SMATCH=off
+ 
  #
  # Message catalog
  #
  POFILES= $(OBJS:%.o=%.po)
  POFILE= awk.po