Firebird doesn't support MSVC 2015

[Stephan Bergmann]

On 03/02/2016 12:32 PM, Michael Stahl wrote:
> i think we can do without firebird for now, it's an experimental feature
> anyway so it can be fixed at a later time when somebody gets around to it.

Given how firebird keeps popping up as one of the worst external modules 
whenever you fiddle with a new toolchain, are we sure it'll ever get out 
of the experimental feature status?  Or would it be time to search for 
better alternatives right from the start?