include build stamp in unix

@@ -196,10 +196,11 @@
 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)

@@ -955,10 +956,12 @@
 
 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=