Add frozen_string_literal: false to all files

There is a ridiculous amount of warnings from Ruby 3.4 chilled strings,
and also a few errors because of StringIO incompatibility, see ruby/stringio#93

I'm not comfortable setting this to anything else than false. This at least
fully keeps the current behaviour

Author: Earlopain

lib/unicorn.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 require 'etc'
 require 'stringio'
 require 'raindrops'

lib/unicorn/app/old_rails.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # :enddoc:
 # This code is based on the original Rails handler in Mongrel

lib/unicorn/app/old_rails/static.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 # :enddoc:
 # This code is based on the original Rails handler in Mongrel
 # Copyright (c) 2005 Zed A. Shaw

lib/unicorn/cgi_wrapper.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # :enddoc:
 # This code is based on the original CGIWrapper from Mongrel

lib/unicorn/configurator.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 require 'logger'
 
 # Implements a simple DSL for configuring a unicorn server.

lib/unicorn/const.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 module Unicorn::Const # :nodoc:
   # default TCP listen host address (0.0.0.0, all interfaces)

lib/unicorn/http_request.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 # :enddoc:
 # no stable API here
 require 'unicorn_http'

lib/unicorn/http_response.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 # :enddoc:
 # Writes a Rack response to your client using the HTTP/1.1 specification.
 # You use it by simply doing:

lib/unicorn/http_server.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # This is the process manager of Unicorn. This manages worker
 # processes which in turn handle the I/O and application process.

lib/unicorn/launcher.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # :enddoc:
 $stdout.sync = $stderr.sync = true

lib/unicorn/oob_gc.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # Strongly consider https://github.com/tmm1/gctools if using Ruby 2.1+
 # It is built on new APIs in Ruby 2.1, so it is more intelligent than

lib/unicorn/preread_input.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 module Unicorn
 # This middleware is used to ensure input is buffered to memory

lib/unicorn/select_waiter.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # fallback for non-Linux and Linux <4.5 systems w/o EPOLLEXCLUSIVE
 class Unicorn::SelectWaiter # :nodoc:
   def get_readers(ready, readers, timeout) # :nodoc:

lib/unicorn/socket_helper.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 # :enddoc:
 require 'socket'
 

lib/unicorn/stream_input.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # When processing uploads, unicorn may expose a StreamInput object under
 # "rack.input" of the Rack environment when

lib/unicorn/tee_input.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # Acts like tee(1) on an input input to provide a input-like stream
 # while providing rewindable semantics through a File/StringIO backing

lib/unicorn/tmpio.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 # :stopdoc:
 require 'tmpdir'
 

lib/unicorn/util.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 require 'fcntl'
 module Unicorn::Util # :nodoc:

lib/unicorn/worker.rb

@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 require "raindrops"
 
 # This class and its members can be considered a stable interface