9210 remove KMDB branch debugging support
9211 ::crregs could do with cr2/cr3 support
9209 ::ttrace should be able to filter by thread
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>

*** 20,37 ****
  #
  #
  # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! #ident  "%Z%%M% %I%     %E% SMI"
! #
  
  KMDBML += \
          kaif_invoke.s \
          kmdb_start.s
  
  KMDBSRCS += \
          mdb_ia32util.c \
!         kmdb_makecontext.c \
!         kvm_cpu_p6.c
  
  SACPPFLAGS = -D__$(MACH)
--- 20,35 ----
  #
  #
  # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! # Copyright 2018 Joyent, Inc.
  
  KMDBML += \
          kaif_invoke.s \
          kmdb_start.s
  
  KMDBSRCS += \
          mdb_ia32util.c \
!         kmdb_makecontext.c
  
  SACPPFLAGS = -D__$(MACH)