PSQL bugs

(CORE-921) A bug in EXECUTE STATEMENT implementation could cause a core dump during PSQL execution.

fixed by A. Peshkov

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SF #1422471 A memory leak was exhibited in EXECUTE STATEMENT.

fixed by A. Peshkov

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Not registered ROW_COUNT was getting cleared after SUSPEND execution.

fixed by D. Yemanov

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SF #1124720 Problem with FOR EXECUTE STATEMENT … DO SUSPEND;

fixed by A. Peshkov

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Not registered Memory leakage was occurring when selectable stored procedures were called from PSQL or in subqueries.

fixed by N. Samofatov

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Not registered The wrong error would be reported when non-active contexts were accessed in multi-action triggers.

fixed by D. Yemanov

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Not registered An internal error was reported when attempting to pass/return blobs to/from string functions inside PSQL.

fixed by D. Yemanov

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