Apply patch by Treeve Jelbert to build against ICU 5.11.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57926 65644016-39b1-43b1-bf79-96bc8fe82c15
Fixed CORE-4081 - Built-in functions and subselect no longer supported in "update or insert" value list.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57927 65644016-39b1-43b1-bf79-96bc8fe82c15