New PHP PostgreSQL functions and manual

Hello Everyone,

I have finished doing all the new function for PostgreSQL in PHP 5.1,
and fully rewritten the manual.

Please check it out:

http://php.planetmirror.com/manual/en/ref.pgsql.php

Some great new functions include:

* pg_query_params
* pg_prepare/pg_execute
* pg_result_error_field
* pg_transaction_status

Cheers,

Chris