Message2924

I wrote Japanese codecs for Jython2.2.1
The attached patch includes following 6 files.

 * encoding/shift_jis.py
 * encoding/euc_jp.py
 * encoding/iso2022_jp.py
 * encoding/ms932.py
 * encoding/bridge_to_java.py
 * test/test_japanese_codecs.py

I didn't change any existing scripts.
I tried to run 'jython dist/Lib/test/regrtest.py -a'
but it doesn't finish.
It may be caused from lack of my disk-space.
I executed "jython CPythonLib\test\test_japanese_codecs.py" directly and
confirm it doesn't make error.