Move global methods into Kernel module.

[reitermarkus]

Extracted from #6366.

Globally defined methods are not available from within subclasses of DelegateClass.

Example:

module Kernel
  def global_works; end
end

def global_fails; end

class D < DelegateClass(Hash)
  def works
    global_works
  end

  def fails
    global_fails
  end
end

D.new({}).works
D.new({}).fails

[MikeMcQuaid]

Would be nice to make this in Library/Homebrew/extend/kernel/utils or something or making them in a new module which is included in Kernel for backwards compatibility?

[reitermarkus]

for backwards compatibility

This is already backwards compatible. Everything inside Kernel is also included in Object.

[MikeMcQuaid]

This is already backwards compatible. Everything inside Kernel is also included in Object.

Sorry, I mean backwards compatibility after moving to another module.