include buildstamp in onbld

*** 87,96 ****
--- 87,97 ----
  file path=opt/onbld/bin/Install mode=0555
  file path=opt/onbld/bin/bindrop mode=0555
  file path=opt/onbld/bin/bldenv mode=0555
  file path=opt/onbld/bin/bringovercheck mode=0555
  file path=opt/onbld/bin/build_cscope mode=0555
+ file path=opt/onbld/bin/buildstamp mode=0555
  file path=opt/onbld/bin/cddlchk mode=0555
  file path=opt/onbld/bin/check_rtime mode=0555
  file path=opt/onbld/bin/checkpaths mode=0555
  file path=opt/onbld/bin/checkproto mode=0555
  file path=opt/onbld/bin/copyrightchk mode=0555