Misc.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57645 65644016-39b1-43b1-bf79-96bc8fe82c15
Parse BLR messages using BlrReader (and without duplicate code) to avoid segfaults with truncated or invalid data.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57646 65644016-39b1-43b1-bf79-96bc8fe82c15
Misc.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57647 65644016-39b1-43b1-bf79-96bc8fe82c15