Cleanup and reorganization.

  - Added a private api layer (org.postgresql.core.Base*)
  - Cleaned up public api (org.postgresql.PG*)
  - Added consistent headers and copywrite info
  - Removed deprecated Serialize functionality
  - Cleaned up imports
  - Moved some files to more appropriate locations

 Modified Files:
 	jdbc/org/postgresql/Driver.java.in
 	jdbc/org/postgresql/PGConnection.java
 	jdbc/org/postgresql/PGNotification.java
 	jdbc/org/postgresql/PGStatement.java
 	jdbc/org/postgresql/core/Encoding.java
 	jdbc/org/postgresql/core/Notification.java
 	jdbc/org/postgresql/core/QueryExecutor.java
 	jdbc/org/postgresql/core/StartupPacket.java
 	jdbc/org/postgresql/fastpath/Fastpath.java
 	jdbc/org/postgresql/fastpath/FastpathArg.java
 	jdbc/org/postgresql/geometric/PGbox.java
 	jdbc/org/postgresql/geometric/PGcircle.java
 	jdbc/org/postgresql/geometric/PGline.java
 	jdbc/org/postgresql/geometric/PGlseg.java
 	jdbc/org/postgresql/geometric/PGpath.java
 	jdbc/org/postgresql/geometric/PGpoint.java
 	jdbc/org/postgresql/geometric/PGpolygon.java
 	jdbc/org/postgresql/jdbc1/AbstractJdbc1Connection.java
 	jdbc/org/postgresql/jdbc1/AbstractJdbc1DatabaseMetaData.java
 	jdbc/org/postgresql/jdbc1/AbstractJdbc1ResultSet.java
 	jdbc/org/postgresql/jdbc1/AbstractJdbc1ResultSetMetaData.java
 	jdbc/org/postgresql/jdbc1/AbstractJdbc1Statement.java
 	jdbc/org/postgresql/jdbc1/Jdbc1CallableStatement.java
 	jdbc/org/postgresql/jdbc1/Jdbc1Connection.java
 	jdbc/org/postgresql/jdbc1/Jdbc1DatabaseMetaData.java
 	jdbc/org/postgresql/jdbc1/Jdbc1PreparedStatement.java
 	jdbc/org/postgresql/jdbc1/Jdbc1ResultSet.java
 	jdbc/org/postgresql/jdbc1/Jdbc1ResultSetMetaData.java
 	jdbc/org/postgresql/jdbc1/Jdbc1Statement.java
 	jdbc/org/postgresql/jdbc2/AbstractJdbc2Blob.java
 	jdbc/org/postgresql/jdbc2/AbstractJdbc2Clob.java
 	jdbc/org/postgresql/jdbc2/AbstractJdbc2Connection.java
 	jdbc/org/postgresql/jdbc2/AbstractJdbc2DatabaseMetaData.java
 	jdbc/org/postgresql/jdbc2/AbstractJdbc2ResultSet.java
 	jdbc/org/postgresql/jdbc2/AbstractJdbc2ResultSetMetaData.java
 	jdbc/org/postgresql/jdbc2/AbstractJdbc2Statement.java
 	jdbc/org/postgresql/jdbc2/Array.java
 	jdbc/org/postgresql/jdbc2/Jdbc2CallableStatement.java
 	jdbc/org/postgresql/jdbc2/Jdbc2Connection.java
 	jdbc/org/postgresql/jdbc2/Jdbc2PreparedStatement.java
 	jdbc/org/postgresql/jdbc2/Jdbc2ResultSet.java
 	jdbc/org/postgresql/jdbc2/Jdbc2ResultSetMetaData.java
 	jdbc/org/postgresql/jdbc2/Jdbc2Statement.java
 	jdbc/org/postgresql/jdbc3/AbstractJdbc3ResultSet.java
 	jdbc/org/postgresql/jdbc3/Jdbc3CallableStatement.java
 	jdbc/org/postgresql/jdbc3/Jdbc3Connection.java
 	jdbc/org/postgresql/jdbc3/Jdbc3PreparedStatement.java
 	jdbc/org/postgresql/jdbc3/Jdbc3ResultSet.java
 	jdbc/org/postgresql/jdbc3/Jdbc3ResultSetMetaData.java
 	jdbc/org/postgresql/jdbc3/Jdbc3Statement.java
 	jdbc/org/postgresql/largeobject/BlobInputStream.java
 	jdbc/org/postgresql/largeobject/BlobOutputStream.java
 	jdbc/org/postgresql/largeobject/LargeObject.java
 	jdbc/org/postgresql/largeobject/LargeObjectManager.java
 	jdbc/org/postgresql/test/jdbc2/Jdbc2TestSuite.java
 	jdbc/org/postgresql/test/jdbc2/optional/BaseDataSourceTest.java
 	jdbc/org/postgresql/util/MD5Digest.java
 	jdbc/org/postgresql/util/MessageTranslator.java
 	jdbc/org/postgresql/util/PGbytea.java
 	jdbc/org/postgresql/util/PGmoney.java
 	jdbc/org/postgresql/util/PGobject.java
 	jdbc/org/postgresql/util/PGtokenizer.java
 	jdbc/org/postgresql/util/PSQLException.java
 	jdbc/org/postgresql/util/UnixCrypt.java
 Added Files:
 	jdbc/org/postgresql/core/BaseConnection.java
 	jdbc/org/postgresql/core/BaseResultSet.java
 	jdbc/org/postgresql/core/BaseStatement.java
 	jdbc/org/postgresql/core/Field.java
 	jdbc/org/postgresql/core/PGStream.java
 Removed Files:
 	jdbc/org/postgresql/Field.java
 	jdbc/org/postgresql/PG_Stream.java
 	jdbc/org/postgresql/test/jdbc2/SerializeObject.java
 	jdbc/org/postgresql/test/jdbc2/SerializeTest.java
 	jdbc/org/postgresql/util/Serialize.java