Ruby

merge revision(s) b8386f7f7f6d7a7d76481e02d389d0f5211f0f2c:

    Prepend DebugSystem to VCS class only

    And revert 24e5f1c982966c379220b1bbb26b4e0320180fa1, pepending to
    Kernel did not affect the top level methods before 3.0.
    ---
     tool/lib/vcs.rb    | 3 ---
     tool/make-snapshot | 2 +-
     2 files changed, 1 insertion(+), 4 deletions(-)