Dear Maintainer,

I am using keepassx on a regular basis to store my credentials using
multiple databases. I am using passphrases as well as key files to
secure the individual kdb files, however switching between the different
databases is a hassle due to the need to re-select the key file everytime.

With the attached patch applied, keepassx optionally stores the path to the
appropiate keyfile with each bookmark, making switching between the different
databases easier.