Merge trift2.:/MySQL/M50/push-5.0

into  trift2.:/MySQL/M51/merge-5.1


BitKeeper/deleted/.del-make_win_src_distribution.sh~f80d8fca44e4e5f1:
  Use local, this whole tool is obsolete.
scripts/Makefile.am:
  No change in 5.1, this never had "make_win_src_distribution".