Bug#510627: Packages are not externalizable

[Juliusz Chroboczek]

Package: ecl
Version: 0.9j-20080306-5

Consider this:

  (defun test () (eq *package* #.*package*))

Compling this with the file compiler causes

  Object #<"COMMON-LISP-USER" package> cannot be externalized

This violates Section 3.2.44 of the ANSI Common Lisp standard, which says
that packages are externalisable.  (Coincidentally, it happens to work in
all of CMUCL, CCL and CLISP.)

                                        Juliusz