Funtion rename:

Funtion rename:
Functions are renamed accoding to coding stanard. Some functions has
completely different name now.
New functions:
pg_copy_to()/pg_copy_from() - by Youichi Iwakiri <yiwakiri@st.rim.or.jp>
pg_lo_tell()/pg_lo_seek()/pg_result_error()/pg_result_status()
pg_escape_string()/pg_escape_bytea() - Only pgsql 7.2 or later.
Fixed:
Wrong mode when clean up connection resource.
Compiler warning for pg_encoding_to_char().
# Please do not document new functions, yet.
# For new functions and other info, please read README
# in module dir.