Some stuff to future-proof against future Ruby incompatibilities.
More coming....

I've also pushed out preliminary work (started in 2021) to the
`pico' branch to switch the HTTP parser from Ragel to
picohttpparser.  It will simplify the build + maintenance,
especially when distros carry different Ragel versions (or don't
package it all, as some hackers can't afford bandwidth and disk
for a C++ toolchain).

Other notes: New releases will probably be hosted on yhbt.net if
the Rubygems.org MFA threshold is reached.  Caring about the
identity of hackers is totally misguided when we already show
our code (and even document it!).  If you can't audit the code
yourself, get an actual professional to do it and don't bother
amateurs like me.

Eric Wong (4):
  t/integration: disable proxies when running curl(1)
  tests: port back-out-of-upgrade to Perl 5
  doc: various updates and disclaimers
  treewide: future-proof frozen_string_literal changes

 HACKING                             |  13 +++-
 README                              |   9 +++
 Rakefile                            |   1 +
 TODO                                |   4 +-
 bin/unicorn                         |   1 +
 bin/unicorn_rails                   |   1 +
 examples/big_app_gc.rb              |   1 +
 examples/echo.ru                    |   1 +
 examples/logger_mp_safe.rb          |   1 +
 examples/unicorn.conf.minimal.rb    |   1 +
 examples/unicorn.conf.rb            |   1 +
 ext/unicorn_http/extconf.rb         |   1 +
 lib/unicorn.rb                      |   1 +
 lib/unicorn/app/old_rails.rb        |   1 +
 lib/unicorn/app/old_rails/static.rb |   1 +
 lib/unicorn/cgi_wrapper.rb          |   1 +
 lib/unicorn/configurator.rb         |   1 +
 lib/unicorn/const.rb                |   1 +
 lib/unicorn/http_request.rb         |   1 +
 lib/unicorn/http_response.rb        |   1 +
 lib/unicorn/http_server.rb          |   1 +
 lib/unicorn/launcher.rb             |   1 +
 lib/unicorn/oob_gc.rb               |   1 +
 lib/unicorn/preread_input.rb        |   1 +
 lib/unicorn/select_waiter.rb        |   1 +
 lib/unicorn/socket_helper.rb        |   1 +
 lib/unicorn/stream_input.rb         |   1 +
 lib/unicorn/tee_input.rb            |   1 +
 lib/unicorn/tmpio.rb                |   1 +
 lib/unicorn/util.rb                 |   1 +
 lib/unicorn/worker.rb               |   1 +
 setup.rb                            |   1 +
 t/back-out-of-upgrade.t             |  44 +++++++++++
 t/broken-app.ru                     |   1 +
 t/client_body_buffer_size.ru        |   1 +
 t/detach.ru                         |   1 +
 t/env.ru                            |   1 +
 t/fails-rack-lint.ru                |   1 +
 t/heartbeat-timeout.ru              |   1 +
 t/integration.ru                    |   1 +
 t/integration.t                     |   1 +
 t/lib.perl                          |  67 ++++++++++++++---
 t/listener_names.ru                 |   1 +
 t/oob_gc.ru                         |   1 +
 t/oob_gc_path.ru                    |   1 +
 t/pid.ru                            |   1 +
 t/preread_input.ru                  |   1 +
 t/reopen-logs.ru                    |   1 +
 t/t0008-back_out_of_upgrade.sh      | 110 ----------------------------
 t/t0013.ru                          |   1 +
 t/t0014.ru                          |   1 +
 t/t0301.ru                          |   1 +
 test/aggregate.rb                   |   1 +
 test/benchmark/dd.ru                |   1 +
 test/benchmark/ddstream.ru          |   1 +
 test/benchmark/readinput.ru         |   1 +
 test/benchmark/stack.ru             |   1 +
 test/exec/test_exec.rb              |   1 +
 test/test_helper.rb                 |   1 +
 test/unit/test_ccc.rb               |   1 +
 test/unit/test_configurator.rb      |   1 +
 test/unit/test_droplet.rb           |   1 +
 test/unit/test_http_parser.rb       |   1 +
 test/unit/test_http_parser_ng.rb    |   1 +
 test/unit/test_request.rb           |   1 +
 test/unit/test_server.rb            |   1 +
 test/unit/test_signals.rb           |   1 +
 test/unit/test_socket_helper.rb     |   1 +
 test/unit/test_stream_input.rb      |   1 +
 test/unit/test_tee_input.rb         |   1 +
 test/unit/test_util.rb              |   1 +
 test/unit/test_waiter.rb            |   1 +
 unicorn.gemspec                     |   1 +
 73 files changed, 188 insertions(+), 126 deletions(-)
 create mode 100644 t/back-out-of-upgrade.t
 delete mode 100755 t/t0008-back_out_of_upgrade.sh