Replaced debug info blob id with blob contents in cached triggers. This fixes the first part of CORE-3305 / CORE-4390, thus making the original problem visible.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/branches/B2_5_Release@59655 65644016-39b1-43b1-bf79-96bc8fe82c15