sbcl-1.2.13

changes in sbcl-1.2.13 relative to sbcl-1.2.12:
  * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
    return the new count
  * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
  * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
    situations
  * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
    printed. (lp#1437947)
  * bug-fix: TRUENAME works properly on broken symlinks presented as
    directories. (lp#1458164)
  * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
    order of argument evaluation. (lp#1458190)
  * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
  * bug fix: DEFSETF lambda lists should not permit argument destructuring.
  * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
    situations incorrectly return the result of a SLOT-MISSING method
    instead of always returning the new value. (lp#1460381)
  * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
    its lexical environment (thus being a closure) caused expressions
    involving the macro name to cause corruption in the pretty-printer
    due to faulty introspection of the lambda list of a closure.
  * bug fix: out of line MAP/MAP-INTO check that the results produced by the
    function are of the matching sequence type. (lp#1459581)
  * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
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