[clean-list] Clean 2.3 available for Windows and Linux

[John van Groningen]

Clean 2.3 is now available for Windows and Linux (IA32 and AMD64) at:

http://wiki.clean.cs.ru.nl/Download_Clean

New in version 2.3:

Language additions:

- Unboxed and boxed array expressions and comprehensions.
  For example:
        {# 0,1,2 } // an array of type .{#Int}
        {! 0,1,2 } // an array of type .{!Int}
        {# e+e \\ e <- [0,1,2] } // an array of type .{#Int}
        {! e+e \\ e <- [0,1,2] } // an array of type .{!Int}

- Record and array updates after # can also be written as:
        # r & x = 1
  instead of
        # r = {r & x = 1}
  or
        # a & [i] = x
  instead of
        # a = {a & [i] = x}
  Multiple updates are also allowed, for example:
        # r & x = 1,
              y = 2,
              z = 3
  instead of
        # r = {r & x=1, y=2, z=3}
  Multiple fields and indices are also possible, for example:
        # r & a.[i].x = y
  instead of
        # r = {r & a.[i].x = y}

- A generic function can be imported explicitly, for example:
        from StdGeneric import generic bimap

Windows libraries:

- Renamed ArgEnvWindows to ArgEnv.
- The Tcp library has been split in a part that does not depend on
  Object IO and a part that does. This new library (TCPIP) should now
  be used.
- Ported MersenneTwister, Gast en Dynamics (without dynamic linking)
  to 64 bit Windows.
- Removed GEC and Hilde.

Linux libraries:

- Renamed stdenv to StdEnv.
- Ported Directory and MersenneTwister.
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