Merged the decimal-branch (revisions 54886 to 58140). Decimal is now
fully updated to the latests Decimal Specification (v1.66) and the
latests test cases (v2.56).

Thanks to Mark Dickinson for all his help during this process.
diff --git a/Lib/test/decimaltestdata/dqCopyAbs.decTest b/Lib/test/decimaltestdata/dqCopyAbs.decTest
new file mode 100644
index 0000000..91f4a68
--- /dev/null
+++ b/Lib/test/decimaltestdata/dqCopyAbs.decTest
@@ -0,0 +1,88 @@
+------------------------------------------------------------------------

+-- dqCopyAbs.decTest -- quiet decQuad copy and set sign to zero       --

+-- Copyright (c) IBM Corporation, 1981, 2007.  All rights reserved.   --

+------------------------------------------------------------------------

+-- Please see the document "General Decimal Arithmetic Testcases"     --

+-- at http://www2.hursley.ibm.com/decimal for the description of      --

+-- these testcases.                                                   --

+--                                                                    --

+-- These testcases are experimental ('beta' versions), and they       --

+-- may contain errors.  They are offered on an as-is basis.  In       --

+-- particular, achieving the same results as the tests here is not    --

+-- a guarantee that an implementation complies with any Standard      --

+-- or specification.  The tests are not exhaustive.                   --

+--                                                                    --

+-- Please send comments, suggestions, and corrections to the author:  --

+--   Mike Cowlishaw, IBM Fellow                                       --

+--   IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK         --

+--   mfc@uk.ibm.com                                                   --

+------------------------------------------------------------------------

+version: 2.56

+

+-- All operands and results are decQuads.

+extended:    1

+clamp:       1

+precision:   34

+maxExponent: 6144

+minExponent: -6143

+rounding:    half_even

+

+-- Sanity check

+dqcpa001 copyabs       +7.50  -> 7.50

+

+-- Infinities

+dqcpa011 copyabs  Infinity    -> Infinity

+dqcpa012 copyabs  -Infinity   -> Infinity

+

+-- NaNs, 0 payload

+dqcpa021 copyabs         NaN  -> NaN

+dqcpa022 copyabs        -NaN  -> NaN

+dqcpa023 copyabs        sNaN  -> sNaN

+dqcpa024 copyabs       -sNaN  -> sNaN

+

+-- NaNs, non-0 payload

+dqcpa031 copyabs       NaN10  -> NaN10

+dqcpa032 copyabs      -NaN15  -> NaN15

+dqcpa033 copyabs      sNaN15  -> sNaN15

+dqcpa034 copyabs     -sNaN10  -> sNaN10

+dqcpa035 copyabs       NaN7   -> NaN7

+dqcpa036 copyabs      -NaN7   -> NaN7

+dqcpa037 copyabs      sNaN101 -> sNaN101

+dqcpa038 copyabs     -sNaN101 -> sNaN101

+

+-- finites

+dqcpa101 copyabs          7   -> 7

+dqcpa102 copyabs         -7   -> 7

+dqcpa103 copyabs         75   -> 75

+dqcpa104 copyabs        -75   -> 75

+dqcpa105 copyabs       7.10   -> 7.10

+dqcpa106 copyabs      -7.10   -> 7.10

+dqcpa107 copyabs       7.500  -> 7.500

+dqcpa108 copyabs      -7.500  -> 7.500

+

+-- zeros

+dqcpa111 copyabs          0   -> 0

+dqcpa112 copyabs         -0   -> 0

+dqcpa113 copyabs       0E+6   -> 0E+6

+dqcpa114 copyabs      -0E+6   -> 0E+6

+dqcpa115 copyabs     0.0000   -> 0.0000

+dqcpa116 copyabs    -0.0000   -> 0.0000

+dqcpa117 copyabs      0E-141  -> 0E-141

+dqcpa118 copyabs     -0E-141  -> 0E-141

+

+-- full coefficients, alternating bits

+dqcpa121 copyabs   2682682682682682682682682682682682    ->  2682682682682682682682682682682682

+dqcpa122 copyabs  -2682682682682682682682682682682682    ->  2682682682682682682682682682682682

+dqcpa123 copyabs   1341341341341341341341341341341341    ->  1341341341341341341341341341341341

+dqcpa124 copyabs  -1341341341341341341341341341341341    ->  1341341341341341341341341341341341

+

+-- Nmax, Nmin, Ntiny

+dqcpa131 copyabs  9.999999999999999999999999999999999E+6144   ->  9.999999999999999999999999999999999E+6144

+dqcpa132 copyabs  1E-6143                                     ->  1E-6143

+dqcpa133 copyabs  1.000000000000000000000000000000000E-6143   ->  1.000000000000000000000000000000000E-6143

+dqcpa134 copyabs  1E-6176                                     ->  1E-6176

+

+dqcpa135 copyabs  -1E-6176                                    ->  1E-6176

+dqcpa136 copyabs  -1.000000000000000000000000000000000E-6143  ->  1.000000000000000000000000000000000E-6143

+dqcpa137 copyabs  -1E-6143                                    ->  1E-6143

+dqcpa138 copyabs  -9.999999999999999999999999999999999E+6144  ->  9.999999999999999999999999999999999E+6144