sbcl-1.4.0 released

Dear all,

I have released sbcl-1.4.0, just in time for the start of the UK
academic year.  As I dissolve into a mess of individual student queries,
please consume your sbcl with its significantly upgraded version number
responsibly.  Changes relative to sbcl-1.3.21 are appended below.

Best wishes,

Christophe

changes in sbcl-1.4.0 relative to sbcl-1.3.21:
  * minor incompatible change: DESTRUCTURING-BIND treats non-toplevel () as
    nested empty pattern. This seems to be what the standard mandates, so
    conforming code should not be affected.
  * ehancement: (GC :GEN 7) with gencgc will zero-fill dead pseudo-static
    objects so that they do not spuriously cause reachability of objects that
    would have been otherwise dead.
  * enhancement: PROCESS-STATUS now tracks stopped and continued processes
    properly (also fixes lp#1624941, based on patch by Elias Pipping).
  * bug fix: INSPECT handles errors signaled while printing slot
    values. (lp#454682)
  * bug fix: DESCRIBE works on classes like it used to.
  * bug fix: *LOAD-PATHNAME* and *LOAD-TRUENAME* are bound to pathnames
    when processing a sysinit or userinit file
  * bug fix: save-lisp-and-die is able to collect more garbage on non-x86oid
    gencgc targets.
  * bug fix: fixed out-of-bounds array read in optimized POSITION on bit-vectors
  * bug fix: signal emulation respects the 128-byte stack red zone on x86-64
    macOS.


------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot