Clarification suggestion for 46.4 chapter.

Hey,

The section 46.4 describes the base data types used in messages.
http://www.postgresql.org/docs/9.1/static/protocol-message-types.html

According to section 46.5
http://www.postgresql.org/docs/9.1/static/protocol-message-formats.html
there are cases when Int32 can be negative (e.g. see DataRow(B) message
description.)

Thus, I would like to suggest to change the description of Int(i)
from
"An n-bit integer in network byte order ..."
to
"An n-bit signed integer in network byte order ..."

--
// Dmitriy.