Comment 48 for bug 836707

The prerequisite patch is in master now.

Updated patch:
 - don't use sqlite3_db_filename
 - require sqlite 3.6.19 due to foreign keys
 - use katze_str_non_null

So I don't know what's special about sqlite3_db_filename, but it doesn't work for me. My suggestion is henceforth to not use it, which is what I did here.
http://www.sqlite.org/c3ref/db_filename.html

As far as tests go, I'd say the easiest option is to adapt the required arguments after landing to whatever the tests may need.