Enable TLS 1.3 in ruby 2.7

[Aaron Bieber]

Hi Jeremy!

Here is a diff tb@ was kind enough to smack together when I was trying to track
down why TLS 1.3 was not available in ruby.

I have tested on a few different machines with no ill effect.

I also ran the tests which resulted in:
Finished tests in 1463.007495s, 14.3492 tests/s, 1858.9283 assertions/s.
20993 tests, 2719626 assertions, 14 failures, 0 errors, 73 skips

And some irb action for good measure:

  qbit@tal[0]:~$ irb27
  irb(main):001:0> require 'openssl'
  => true
  irb(main):002:0> OpenSSL::SSL::TLS1_3_VERSION
  => 772
  irb(main):003:0> 

I am also able to connect to Google via tls 1.3 using the below:

  #!/usr/bin/env ruby
  
  require 'socket'
  require 'openssl'
  
  hostname = "google.com"
  
  ctx = OpenSSL::SSL::SSLContext.new()
  s = TCPSocket.new(hostname, 443)
  ssl = OpenSSL::SSL::SSLSocket.new(s, ctx)
  ssl.hostname = hostname
  ssl.connect
  
  p ssl.ssl_version
  p ssl.peer_cert
  
  ssl.sync_close = true
  ssl.close
  
Any thoughts on adding this?

Cheers,
Aaron

diff refs/heads/master refs/heads/ruby_tls13
blob - 64d2b8a0f4fca132c9c60418a41b461a17901b8d
blob + 150b0490e7b3006ef7ddb581224adfbba400ed81
--- lang/ruby/2.7/Makefile
+++ lang/ruby/2.7/Makefile
@@ -6,7 +6,7 @@ SHARED_LIBS =           ruby27  0.0
 NEXTVER =              2.8
 PKGSPEC-main ?=         ruby->=2.7.0,<${NEXTVER}
 
-REVISION-main =                0
+REVISION-main =                1
 
 PSEUDO_FLAVORS=                no_ri_docs bootstrap
 # Do not build the RI docs on slow arches
blob - /dev/null
blob + 795924e7187f8cdadc87117a475035ff9ed98273 (mode 644)
--- /dev/null
+++ lang/ruby/2.7/patches/patch-ext_openssl_ossl_ssl_c
@@ -0,0 +1,16 @@
+$OpenBSD$
+
+Index: ext/openssl/ossl_ssl.c
+--- ext/openssl/ossl_ssl.c.orig
++++ ext/openssl/ossl_ssl.c
+@@ -13,6 +13,10 @@
+ 
+ #define numberof(ary) (int)(sizeof(ary)/sizeof((ary)[0]))
+ 
++#ifndef TLS1_3_VERSION
++#  define TLS1_3_VERSION 0x0304
++#endif
++
+ #ifdef _WIN32
+ #  define TO_SOCKET(s) _get_osfhandle(s)
+ #else