fixed. closures scope in eval(string)
target_class should not be TT_ICLASS in instance_eval(string); ref #1152
Merge pull request #2598 from SatoshiOdawara/fix_lv_scope_eval

fixed. closures scope in eval(string)
Merge pull request #2599 from SatoshiOdawara/fix_target_class_in_instance_eval

target_class should not be TT_ICLASS in instance_eval(string); ref #1152