setBlob(int, Blob) with large blob

Hello.

I am using setBlob(int, Blob) with a 3.2GB large blob, but got the following stack trace.

java.lang.IndexOutOfBoundsException
    at java.io.BufferedInputStream.read(BufferedInputStream.java:327)
    at org.postgresql.jdbc2.AbstractJdbc2Statement.setBlob(AbstractJdbc2Statement.java:3073)

This pull-request fixes this problem for me.
https://github.com/pgjdbc/pgjdbc/pull/83

Regards,
Tore Halset.