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/copyabs.decTest b/Lib/test/decimaltestdata/copyabs.decTest
new file mode 100644
index 0000000..7457552
--- /dev/null
+++ b/Lib/test/decimaltestdata/copyabs.decTest
@@ -0,0 +1,86 @@
+------------------------------------------------------------------------

+-- copyAbs.decTest -- quiet 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

+

+extended:    1

+precision:   9

+rounding:    half_up

+maxExponent: 999

+minExponent: -999

+

+-- Sanity check

+cpax001 copyabs       +7.50  -> 7.50

+

+-- Infinities

+cpax011 copyabs  Infinity    -> Infinity

+cpax012 copyabs  -Infinity   -> Infinity

+

+-- NaNs, 0 payload

+cpax021 copyabs         NaN  -> NaN

+cpax022 copyabs        -NaN  -> NaN

+cpax023 copyabs        sNaN  -> sNaN

+cpax024 copyabs       -sNaN  -> sNaN

+

+-- NaNs, non-0 payload

+cpax031 copyabs       NaN10  -> NaN10

+cpax032 copyabs      -NaN15  -> NaN15

+cpax033 copyabs      sNaN15  -> sNaN15

+cpax034 copyabs     -sNaN10  -> sNaN10

+cpax035 copyabs       NaN7   -> NaN7

+cpax036 copyabs      -NaN7   -> NaN7

+cpax037 copyabs      sNaN101 -> sNaN101

+cpax038 copyabs     -sNaN101 -> sNaN101

+

+-- finites

+cpax101 copyabs          7   -> 7

+cpax102 copyabs         -7   -> 7

+cpax103 copyabs         75   -> 75

+cpax104 copyabs        -75   -> 75

+cpax105 copyabs       7.10   -> 7.10

+cpax106 copyabs      -7.10   -> 7.10

+cpax107 copyabs       7.500  -> 7.500

+cpax108 copyabs      -7.500  -> 7.500

+

+-- zeros

+cpax111 copyabs          0   -> 0

+cpax112 copyabs         -0   -> 0

+cpax113 copyabs       0E+6   -> 0E+6

+cpax114 copyabs      -0E+6   -> 0E+6

+cpax115 copyabs     0.0000   -> 0.0000

+cpax116 copyabs    -0.0000   -> 0.0000

+cpax117 copyabs      0E-141  -> 0E-141

+cpax118 copyabs     -0E-141  -> 0E-141

+

+-- full coefficients, alternating bits

+cpax121 copyabs   268268268        -> 268268268

+cpax122 copyabs  -268268268        -> 268268268

+cpax123 copyabs   134134134        -> 134134134

+cpax124 copyabs  -134134134        -> 134134134

+

+-- Nmax, Nmin, Ntiny

+cpax131 copyabs  9.99999999E+999   -> 9.99999999E+999

+cpax132 copyabs  1E-999            -> 1E-999

+cpax133 copyabs  1.00000000E-999   -> 1.00000000E-999

+cpax134 copyabs  1E-1007           -> 1E-1007

+

+cpax135 copyabs  -1E-1007          -> 1E-1007

+cpax136 copyabs  -1.00000000E-999  -> 1.00000000E-999

+cpax137 copyabs  -1E-999           -> 1E-999

+cpax199 copyabs  -9.99999999E+999  -> 9.99999999E+999