Fixed bug with Warnings. Warnings are not added to the Statement instead of

the connection when appropriate.
This checkin also adds the type map for jdbc3, however currently it is
identical to the jdbc2 mapping.

 Modified Files:
 	jdbc/org/postgresql/core/BaseStatement.java
 	jdbc/org/postgresql/core/QueryExecutor.java
 	jdbc/org/postgresql/jdbc3/AbstractJdbc3Connection.java