Fixed CORE-4102: Bad optimization of OR predicates applied to unions.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58100 65644016-39b1-43b1-bf79-96bc8fe82c15
Make the master interface available in UDR.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58102 65644016-39b1-43b1-bf79-96bc8fe82c15