include build stamp in unix

*** 196,205 ****
--- 196,206 ----
  NDRGEN=         $(ONBLD_TOOLS)/bin/$(MACH)/ndrgen
  GENOFFSETS=     $(ONBLD_TOOLS)/bin/genoffsets
  CTFCVTPTBL=     $(ONBLD_TOOLS)/bin/ctfcvtptbl
  CTFFINDMOD=     $(ONBLD_TOOLS)/bin/ctffindmod
  XREF=           $(ONBLD_TOOLS)/bin/xref
+ BUILDSTAMP=     $(ONBLD_TOOLS)/bin/buildstamp
  FIND=           /usr/bin/find
  PERL=           /usr/bin/perl
  PYTHON_24=      /usr/bin/python2.4
  PYTHON_26=      /usr/bin/python2.6
  PYTHON=         $(PYTHON_24)
*** 955,964 ****
--- 956,967 ----
  
  PROCESS_COMMENT=                   @?${MCS} -c -a $(RELEASE_CM) -a $(DEV_CM)
  $(STRIP_COMMENTS)PROCESS_COMMENT=  @?${MCS} -d -a $(RELEASE_CM) -a $(DEV_CM)
  $(RELEASE_BUILD)PROCESS_COMMENT=   @?${MCS} -d -a $(RELEASE_CM)
  
+ PROCESS_BUILDSTAMP=     @?${MCS} -n .ILLUMOS_buildstamp -d -a "`${BUILDSTAMP}`"
+ 
  STRIP_STABS=                       :
  $(RELEASE_BUILD)STRIP_STABS=       $(STRIP) -x $@
  
  POST_PROCESS_O=         $(PROCESS_COMMENT) $@
  POST_PROCESS_A=