Be less specific about version when detecting if a version of firebird is running at installation time.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58471 65644016-39b1-43b1-bf79-96bc8fe82c15
Front ported CORE-3989: Bad performance / slow response when many concurrent sorts are executed.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58472 65644016-39b1-43b1-bf79-96bc8fe82c15
Fixed CORE-4168: Backup containing procedures or triggers that select from external tables cannot be restored with ExternalFileAccess=None.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58473 65644016-39b1-43b1-bf79-96bc8fe82c15