0.9.8.14:

0.9.8.14:
        Fix saving a core with callbacks on x86 and x86-64, as
        discussed on sbcl-devel "CFFI Callbacks on SBCL" on
        2005-12-31. Essentially the problem is that the address of
        #'ENTER-ALIEN-CALLBACK is hard-coded into the assembly callback
        wrappers, and the address of the function can change when
        saving a non-purified core.

        * Define a static symbol that contains #'ENTER-ALIEN-CALLBACK
          in the value slot.
        * Change the x86 / x86-64 wrappers to indirect through the
          slot.
        * Add minimal test case
        * Add a make-config.sh-detected :alien-callbacks feature