nightly update

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57621 65644016-39b1-43b1-bf79-96bc8fe82c15
More work towards unlimited SQL/BLR lengths.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57623 65644016-39b1-43b1-bf79-96bc8fe82c15
Misc.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57624 65644016-39b1-43b1-bf79-96bc8fe82c15
Slightly optimized fetches for internal EXECUTE STATEMENT.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57626 65644016-39b1-43b1-bf79-96bc8fe82c15