Fixed CORE-4137 - Wrong metadata output script generate by isql / CHARACTER SETISO8859_1 sintaxe error.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58287 65644016-39b1-43b1-bf79-96bc8fe82c15
Misc.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58293 65644016-39b1-43b1-bf79-96bc8fe82c15
Better protection against AST delivery during detaching.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58295 65644016-39b1-43b1-bf79-96bc8fe82c15
Warning.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58304 65644016-39b1-43b1-bf79-96bc8fe82c15