Add a spec for defining `initialize_dup` from 2.0
Add a spec for defining `initialize_clone` from 2.0
Add a spec for defining `respond_to_missing?` from 2.0
Fix to define initialie_{dup,clone} and respond_to_missing? for 2.0
Merge pull request #2479 from kachick/2.0-initialzie_dup,clone

Initialize_{dup,clone} and respond_to_missing? should automatically become a private method from 2.0
Pop named regexp captures off the stack to avoid unbalanced stack

Fixes #2482
Add and adjust specs on Kernel#initialize_clone for 2.0
Fix a spec on Kernel#initialize_dup and added specs for 2.0
Add specs for Kernel#respond_to_missing?
Fix builtin {initialize_{dup,clone},respond_to_missing?} for 2.0
Fix a spec for Hash#to_h
Merge pull request #2483 from kachick/2.0-builtin_privatized_method

Builtin initialize_{dup,clone} and respond_to_missing? should be private methods as user defined from 2.0
Update comments for redefined path [ci skip]

https://github.com/rubinius/rubinius/pull/2484#pullrequestreviewcomment-5313802
Fix a spec on Kernel#remove_instance_variable for 2.0

Looks already commited to rubyspec by Shugo Maeda. Thanks!
https://github.com/rubyspec/rubyspec/commit/4c779f799551b506331f3bd198e15517f5e31b8c
Reorder Kernel by Array to use public in Kernel definition

https://github.com/rubinius/rubinius/pull/2484#pullrequestreviewcomment-5313637
Fix Kernel#remove_instance_variable for 2.0
Merge pull request #2484 from kachick/2.0-kernel-rm_ivar

Kernel#remove_instance_variable should be a public method from 2.0
Add specs for String#sub with hash second argument
Implement Hash argument handing for String#sub

Fixes some specs for gitlabhq
Add spec for method that uses a local with a call to same method