* eval.c (rb_frame_last_func): return the most recent frame method
	  name.

	* thread.c (recursive_list_access): use the last method name,
	  instead of the current method name which can be unset in some
	  cases, not to use a symbol by the invalid ID.
	  [ruby-core:66742] [Bug #10579]

	* thread.c (exec_recursive): use the same last method name as
	  recursive_push in the error message when recursive_pop failed.
	  [ruby-core:66742] [Bug #10579]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@49369 b2dd03c8-39d4-4d8f-98ff-823fe69b080e