Ruby

merge revision(s) 9eac9d71786a8dbec520d0541a91149f01adf8ea: [Backport #19969]

    [Bug #19969] Compact st_table after deleted if possible

    ---
     hash.c                 | 19 +++++++++++++++++++
     st.c                   | 40 +++++++++++++++++++++++++++++-----------
     test/ruby/test_hash.rb |  9 +++++++++
     3 files changed, 57 insertions(+), 11 deletions(-)