Misc.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59110 65644016-39b1-43b1-bf79-96bc8fe82c15
Give names to the old and new streams in triggers.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59111 65644016-39b1-43b1-bf79-96bc8fe82c15
Fixed the assertion.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59112 65644016-39b1-43b1-bf79-96bc8fe82c15