added a few base O(n) list operations
added a few base O(n) list operations

aoh/owl-lisp,aoh/owl-lisp,yuriy-chumak/OL,yuriy-chumak/OL,aisamanra/owl-lisp,yuriy-chumak/OL,yuriy-chumak/OL,aisamanra/owl-lisp,aisamanra/owl-lisp,aoh/owl-lisp,yuriy-chumak/OL,yuriy-chumak/OL