bin/143351: [request] update flex(1) to at least 2.5.33

[Mark Linimon]

On Sat, Jan 30, 2010 at 07:47:39PM -0600, Austin English wrote:
> In other words, testing 'make world' (or should it be 'make
> universe'?) with the new flex to make sure nothing breaks?

Well, it needs to do more than pass make(1), it needs to generate working
code.

there's a reason we don't update toolchain code all the time; it requires
a lot of work to make sure that everything still works right and that
there are no regressions.

mcl