10079 smatch Makefile changes for usr/src/lib

*** 20,29 ****
--- 20,30 ----
  #
  #
  # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  LIBRARY =       libdhcputil.a
  VERS =          .1
  LOCOBJS =       dhcp_inittab.o dhcp_symbol.o dhcpmsg.o
  COMDIR =        $(SRC)/common/net/dhcp
*** 46,55 ****
--- 47,59 ----
  CFLAGS +=       $(CCVERBOSE)
  CERRWARN +=     -_gcc=-Wno-switch
  CERRWARN +=     -_gcc=-Wno-uninitialized
  CPPFLAGS +=     -I$(COMDIR)
  
+ # not linted
+ SMATCH=off
+ 
  .KEEP_STATE:
  
  all: $(LIBS)
  
  lint: lintcheck