merge revision(s) 44455,44458,44510: [Backport #9315]

	* vm_insnhelper.c (vm_search_super_method): direct superclass of a
	  module is found when super called in a Method object generated a
	  method defined in a module, call method_missing in that case.
	  [ruby-core:59358] [Bug #9315]

	* proc.c (mnew_from_me): keep iclass as-is, to make inheritance
	  chain consistent.  [ruby-core:59358] [Bug #9315]

	* proc.c (method_owner): return the original defined_class from
	  prepended iclass, instead.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44511 b2dd03c8-39d4-4d8f-98ff-823fe69b080e