Adding a build-dependency on flex

[Nicolás Alvarez]

On 6/18/11, David Nolden <david.nolden.kdevelop at art-master.de> wrote:
> There are more dangers to dependencies than just the inconvenience,
> for example different versions of the dependency might be installed on
> some machines, and might generate incompatible output, which a
> developer not familiar with the code in question can hardly deal with
> (I've been there before with bison).

The .l file we have is *already* incompatible with the latest flex, I
can't generate a .c out of it without some editing. And nobody even
noticed because nobody tries doing that.

-- 
Nicolas