WIP-pyshapelib-Unicode issues

[Bram de Greve]

Hi all,

I've committed some changes to the unicode branch.  I've fixed copyright
infos and headers, the README, added an entry in NEWS for 0.4, and did some
other work on the source code as well.  The compiler warnings should be
gone.

If possible, can you guys test it to identify any further issues?  You can
use the WIP-pyshapelib-Unicode branch "out of the box", as no merge with the
trunk is necessary (I did that for you).

Known issues:

* {test_load|test_load_1_0}.TestNonAsciiColumnName.test:

the column name Fläche is giving us troubles.  Not in dbflib itself, as it
is handled correctly over there, but apparently it is not encoded to UTF-8
when written to the session XML, causing the test to fail.  I'm not familiar
with this issue, so if anyone can help, please feel free =)

*
test_transientdb.TestTransientTable.{test_auto_transient_table|test_transient_table}:

the shapelib C library returns integer numerical fields with more than 10
digits as double (in order to avoid an overflow with the C int).  This is
causing the test to fail as an 'int' is expected for column 3, and an
'double' is found.  Bernard Herzog suggests to let pyshapelib convert them
back to Python long integers.  On the Python API level this can easily be
done using PyLong_FromDouble.  Is it OK to mix long integers and "short"
integers, or should all integers coming from pyshapelib be converted to long
ints?

* when creating new DBF files, Thuban will use the LDID_ESRI_ANSI code
page.  That's LDID 0x57 and uses the cp1252 codec.  This should be
configurable by the user, but I don't really know where to start.  Can
anyone who's familier with the Thuban UI give a headstart?

* pyshapelib should get a proper unittest that can run on its own, but is
also tested from test/runtests.py.  I've never made a unittest in Python
before, so I'm a bit puzzled here.

-- 
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