Multi-byte and client side character encoding tests for copy command..

Hi there,

I am new to this list.

I have made some additions to multi-byte regression tests ( ./src/test/mb),
to include regression tests for copy command. This can be used to test
multi-byte extensions of postgresql and client character encoding, for copy
command. The test uses the following complete character sets: "big5 gbk uhc
gb18030 euc_cn latin8 iso_8859_6 iso_8859_7 euc_kr euc_jp".

I am attaching only the modified README and mbregress.sh with the email. I
have not included the various character sets with the email as they are
nearly 1MB. 

Can you please comment on this..?

I can provide a patch for the same, which includes the character sets.

Thanks,
Ayush

ps: sorry for the previous blank email, that was by mistake.