Upgrade to Ruby 2.6.0 (r65928).

ruby-2.3.0-ruby_version.patch

@@ -20,7 +20,7 @@ diff --git a/configure.ac b/configure.ac
 index 8ea969412f..a00f2b6776 100644
 --- a/configure.ac
 +++ b/configure.ac
-@@ -3622,9 +3622,6 @@ AS_CASE(["$target_os"],
+@@ -3666,9 +3666,6 @@ AS_CASE(["$target_os"],
      rubyw_install_name='$(RUBYW_INSTALL_NAME)'
      ])
  
@@ -30,7 +30,7 @@ index 8ea969412f..a00f2b6776 100644
  rubyarchprefix=${multiarch+'${archlibdir}/${RUBY_BASE_NAME}'}${multiarch-'${rubylibprefix}/${arch}'}
  AC_ARG_WITH(rubyarchprefix,
  	    AS_HELP_STRING([--with-rubyarchprefix=DIR],
-@@ -3647,56 +3644,62 @@ AC_ARG_WITH(ridir,
+@@ -3691,56 +3688,62 @@ AC_ARG_WITH(ridir,
  AC_SUBST(ridir)
  AC_SUBST(RI_BASE_NAME)
  
@@ -120,7 +120,7 @@ index 8ea969412f..a00f2b6776 100644
  
  AS_IF([test "${LOAD_RELATIVE+set}"], [
      AC_DEFINE_UNQUOTED(LOAD_RELATIVE, $LOAD_RELATIVE)
-@@ -3713,6 +3716,7 @@ AC_SUBST(sitearchincludedir)dnl
+@@ -3757,6 +3760,7 @@ AC_SUBST(sitearchincludedir)dnl
  AC_SUBST(arch)dnl
  AC_SUBST(sitearch)dnl
  AC_SUBST(ruby_version)dnl
@@ -171,14 +171,14 @@ diff --git a/tool/rbinstall.rb b/tool/rbinstall.rb
 index d4c110e..d39c9a6 100755
 --- a/tool/rbinstall.rb
 +++ b/tool/rbinstall.rb
-@@ -422,7 +422,7 @@ def CONFIG.[](name, mandatory = false)
+@@ -424,7 +424,7 @@ def CONFIG.[](name, mandatory = false)
  
  install?(:doc, :rdoc) do
    if $rdocdir
 -    ridatadir = File.join(CONFIG['ridir'], CONFIG['ruby_version'], "system")
 +    ridatadir = File.join(CONFIG['ridir'], CONFIG['ruby_version_dir_name'] || CONFIG['ruby_version'], "system")
      prepare "rdoc", ridatadir
-     install_recursive($rdocdir, ridatadir, :mode => $data_mode)
+     install_recursive($rdocdir, ridatadir, :no_install => rdoc_noinst, :mode => $data_mode)
    end
 -- 
 2.1.0
@@ -205,7 +205,7 @@ index 55ca080..75eea2b 100644
 -               RbConfig::CONFIG['ruby_version']
 +               RbConfig::CONFIG['ruby_version_dir_name'] || RbConfig::CONFIG['ruby_version']
               ]
-            elsif RbConfig::CONFIG['rubylibprefix'] then
+            elsif RbConfig::CONFIG['rubylibprefix']
               [
                 RbConfig::CONFIG['rubylibprefix'],
                 'gems',
@@ -245,7 +245,7 @@ diff --git a/test/rubygems/test_gem.rb b/test/rubygems/test_gem.rb
 index 0428bea..b6e090e 100644
 --- a/test/rubygems/test_gem.rb
 +++ b/test/rubygems/test_gem.rb
-@@ -1219,7 +1219,8 @@ def test_self_use_paths
+@@ -1278,7 +1278,8 @@ def test_self_use_paths
  
    def test_self_user_dir
      parts = [@userhome, '.gem', Gem.ruby_engine]
@@ -255,7 +255,7 @@ index 0428bea..b6e090e 100644
  
      assert_equal File.join(parts), Gem.user_dir
    end
-@@ -1296,7 +1297,7 @@ def test_self_gzip
+@@ -1355,7 +1356,7 @@ def test_self_gzip
    def test_self_vendor_dir
      expected =
        File.join RbConfig::CONFIG['vendordir'], 'gems',