- Update to version 1.1.15
  * New feature:
    the iterative spilling/coloring register allocator developed
    by Alexandra Barchunova during Google Summer of Code 2013 is
    now merged in. By default, it only activates for functions that
    optimize with (speed 3) and (> speed compilation-speed), but
    setting sb-regalloc:*register-allocation-method* to :iterative
    forces its execution. The previous behaviour can be obtained by
    instead setting that variable to :greedy.
  * Optimization:
    + make-array with known element-type and unknown dimensions is
      much faster.
    + make-array with unknown element-type is faster as well.
     (lp#1004501)
  * Enhancement:
    + reduced conservativism on GENCGC platforms: conservative roots
       must be valid-looking tagged pointers or point within a code
       object, not merely point to within the allocated part of a
       page, in order to pin a page.
    + support for "Mac Roman" external format.
    + encapsulation of named generic functions now happens without
      altering the identity of the function bound to the name.
  * Bug fix:
    + modular arithmetic optimizations do not stumble on dead branches
      with bad constants. (reported by Douglas Katzman)
    + CLISP can be used again as a cross-compilation host.
      (Thanks to Vasily Postnicov, lp#1261451)
    + run-program crashed with :directory nil. (lp#1265077) (forwarded request 220444 from toganm)

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