Firebird package updated in Debian : 2.5.4.26856.ds4-2

This version will make the build reproducible.

The reproducible builds initiative aims to enable anyone to reproduce bit by bit identical binary packages from a given source, thus enabling anyone to independently verify that a binary matches the source code from which it was said it was derived. For example, this allow the users of Debian to rebuild packages and obtain exactly identical packages to the ones provided by the Debian repositories.

Prune tool sets the creation stamp in the database header to a fixed value (taken from the last changelog stanza) and
prunes unused space on index/data pages of shipped databases