new SQL/PSM language implementation

Hello,

developer Pavel Stehule as an employee of our company CZ.NIC implemented
SQL/PSM language support into PostgreSQL. Implementation is available at
https://github.com/okbob/plpsm0 . Since May 13, 2011, this code is
distributed under following BSD licence.

 Copyright (c) 2011 CZ.NIC, z. s. p. o.
 All rights reserved.

 Redistribution and use in source and binary forms are permitted
 provided that the above copyright notice and this paragraph are
 duplicated in all such forms and that any documentation,
 advertising materials, and other materials related to such
 distribution and use acknowledge that the software was developed
 by the CZ.NIC, z. s. p. o.. The name of the CZ.NIC, z. s. p. o.
 organization may not be used to endorse or promote products derived
 from this software without specific prior written permission.
 THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Best regards,
--
Jaromir Talir
technicky reditel / Chief Technical Officer
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