Adjust for the new get_col api

Decode pgsql LOB objects (bytea type) on fetch

Removed unused variebles.
Return OID as int.

Get OID of the last inserted row

Add support for fetching meta data

Store pgsql_type, intval and boolav per column

Remove debug stuff

Support for native nulls, bools and ints

Eliminate unused parameter.
Don't start a transaction when asking for a cursor with pgsql.
Fix parameter binding for sqlite3

Take a blind stab at implementing scrollable cursors for pgsql.
We allocate a unique cursor name for each statement, so that we
don't interfere with other open statement handles on the same d

Take a blind stab at implementing scrollable cursors for pgsql.
We allocate a unique cursor name for each statement, so that we
don't interfere with other open statement handles on the same dbh.

Note, however, that we force a new transaction for each open scrollable cursor
(postgres requires cursors to be used inside a transaction). This is okay,
except for the case where a scrollable cursor is opened, an update is made and
the cursor is closed; closing the cursor commits the transaction that was begun
when it was opened.

It might well be better to avoid the transaction in PDO and force the user to
be aware of the requirements of cursors and explicitly initiate the transaction
themselves.

This is all untested code; it compiles and looks like it will work, but I
encourage someone with a real postgres setup to actually sit down and try to
use it.

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stub out scrollable cursors

Fixed possible crash.

Make doer() work.
Make error reporting system work.

Don't dup here, PDO will do it as needed

PostgreSQL PDO driver.