Update from the commit logs.

      FLOAT-SIGNALING-NAN-P.

    * Changed the printer to print "Signaling" instead of "Trapping"

      when printing a signaling NaN.

    * Various issues with the switch to using fdlibm have been

      fixed. The issues were mostly not signaling floating-point

      exceptions in places where they were expected.

    * Restore the x87 FPU support on Linux; these are required because

      foreign functions and libraries can still use x87 even if cmucl

      itself does not. This is not required on Darwin because x87 is

      not used there.

    * On the ppc port, handle FP exceptions a bit better by not

      failing if cmucl is unable to interpret the instruction that

      caused the exception.

    * FLOAT-TRAPPING-NAN-P is deprecated and is replaced by

      FLOAT-SIGNALING-NAN-P. These kinds of numbers are called

      signaling NaNs, not trapping NaNs.

    * Microoptimization for sparc in converting a double-float to a

      32-bit signed integer.

    * The compiler can now derive the type of ROUND. (But more work is

      needed.)

    * Fix an issue with multi-processing destroy-process doesn't take

      effect for a schedulable processbecause it has no run-reason

      and/or arrest-reason.

  * ANSI compliance fixes:

    * The values on the branch cuts for the inverse trig and

    * Ticket #105 fixed.

    * Ticket #101 fixed.

    * Ticket #106 fixed.

    * Ticket #100 fixed.

  * Other changes: