10080 smatch Makefile changes for usr/src/cmd

*** 20,29 ****
--- 20,30 ----
  #
  #
  # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  PROG=                   xargs
  # /usr/xpg6/bin/xargs is a symlink to /usr/bin/xargs
  ROOTXPG6SYMLINK=        $(ROOTXPG6BIN)/xargs
  
*** 36,45 ****
--- 37,49 ----
  CPPFLAGS += -I $(SRC)/common/util
  LINTFLAGS += -u
  
  CERRWARN += -_gcc=-Wno-parentheses
  
+ # not linted
+ SMATCH=off
+ 
  .KEEP_STATE:
  
  all: $(PROG)
  
  install: all $(ROOTPROG) $(ROOTXPG6SYMLINK)