* 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]
merge revision(s) 48744,48752: [Backport #10579]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@49246 b2dd03c8-39d4-4d8f-98ff-823fe69b080e