* john/erts/OTP-18.3.4/minusminus_trapping/OTP-15371:
  Optimize operator '--' and yield on large inputs

The removal set now uses a red-black tree instead of an array on
large inputs, decreasing runtime complexity from `n*n` to
`n*log(n)`. It will also exit early when there are no more items
left in the removal set, drastically improving performance and
memory use when the items to be removed are present near the head
of the list.

This got a lot more complicated than before as the overhead of
always using a red-black tree was unacceptable when either of the
inputs were small, but this compromise has okay-to-decent
performance regardless of input size.

Co-authored-by: Dmytro Lytovchenko <dmytro.lytovchenko@erlang-solutions.com>

* siri/test-ct_release_test/OTP-13390:
  Remove upgrade tests from stdlib_SUITE
  Add test of ct_release_test

The test cases minor_upgrade and major_upgrade used
ct_release_test. The point of the tests in stdlib was mainly to test
ct_release_test. ct_release_test produces a 'from-release' based on an
old version of the application under test (in this case stdlib) and
new versions of all other applications. But since it is not always a
good idea to load an old version of stdlib into a new emulator
(e.g. in the OTP-19.0 emulator), these tests are removed.

Instead new tests are added for ct_release_test in common_test.

* bjorn/cuddle-with-tests:
  io_SUITE: Don't fail on fast computers with rough timers

* sverk/bad_printable_range:
  stdlib: Fix io_SUITE:bad_printable_range for windows

Since Windows 8 we are not allowed (in non elevated mode) to
write to hklm.

avoid os:cmd as it treats stderr different on windows.