time.c: [DOC] Time#localtime

	* time.c: state that Time#localtime does nothing when nothing
	  changes.  [ruby-core:87675] [Bug #14880]

	skip test_localtime_zone if force_tz_test is false

	For example Solaris
	https://rubyci.org/logs/rubyci.s3.amazonaws.com/unstable10x/ruby-trunk/log/20180703T091803Z.fail.html.gz

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@66780 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	Bug Fix Enumerator::Lazy#uniq state for multiple call

	* enumerator.c (lazy_uniq_i): create new hash for each calls.
	  [Fix GH-1820]

	Currently

		2.5.0-preview1 :001 > arr = (0..100).lazy.uniq{|i| i % 10}
		 => #<Enumerator::Lazy: #<Enumerator::Lazy: 0..100>:uniq>
		2.5.0-preview1 :002 > arr.to_a
		 => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
		2.5.0-preview1 :003 > arr.to_a
		 => []

	Expected

	arr.to_a to always return same output

	From: Anmol Chopra <anmolchopra@rocketbox.in>

	test_enumerator.rb: duplicate assertions

	* test/ruby/test_enumerator.rb (test_uniq): remove assertions
	  which ared duplicate of lazy enumerator tests in
	  test_lazy_enumerator.rb.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@63824 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	hash.c: support key swapping in Hash#transform_keys!

	* hash.c (rb_hash_transform_keys_bang): support key swapping in
	  Hash#transform_keys!
	  [Bug #14380] [ruby-core:84951]

	* test/ruby/test_hash.rb (test_transform_keys_bang):
	  add assertions for this change

	Fix rubyspec against the change in Hash#transform_keys!

	[Bug #14380] [ruby-core:84951]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@62889 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	Fix setting method visibility on method wrapped with prepend

	Ignore prepended modules when looking for already defined methods on a
	class to set the visibility on.
	[Fix GH-1834]

	From: Dylan Thacker-Smith <Dylan.Smith@shopify.com>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@62860 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

        Merge ruby/spec@fd56cd4



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@62586 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	defined? returns nil for toplevel constant lookup

	* variable.c (rb_const_defined_0): toplevel constant lookup has
	  been removed, should return nil too.
	  [ruby-core:85142] [Bug #14407] [Fix GH-1800]

	From: Gonzalo <grzuy0@gmail.com>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@62568 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61389 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* spec/ruby/core/thread/element_set_spec.rb: `t` can be uninitialized.
  Use `Thread.current` explicitly.


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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61327 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61305 b2dd03c8-39d4-4d8f-98ff-823fe69b080e