10080 smatch Makefile changes for usr/src/cmd

*** 21,30 ****
--- 21,31 ----
  #
  #
  # Copyright (c) 1989, 1996 by Sun Microsystems, Inc.
  # All rights reserved.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  PROG= bdiff 
  
  include ../Makefile.cmd
  
*** 31,40 ****
--- 32,44 ----
  FILEMODE=       755
  
  CPPFLAGS += -D_FILE_OFFSET_BITS=64
  CERRWARN += -_gcc=-Wno-uninitialized
  
+ # not linted
+ SMATCH=off
+ 
  .KEEP_STATE:
  
  all: $(PROG) 
  
  install: all $(ROOTPROG)