* eval.c (proc_invoke): shares dmethod scope local variables.
	  a patch from coderrr at [ruby-core:23050]
	* gc.c (obj_free): do not free cloned scope local variables.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_7@23997 b2dd03c8-39d4-4d8f-98ff-823fe69b080e