Re: gtkfilechooserdialog.pre change

[Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) @ Pike (-) developers forum]

Speaking of "require"s, could we perhaps export which reqires that are
enabled to the cpp somehow, so that you can test for them in the pike
code as well?  Case in point; the GTK2 version of Tools.PV wants to
use GTK2.Widget()->get_window(), which requires gtk 2.14, but I have
no way of testing if it exists, which led to the testsuite failing on
some xenofarm machine (I forget which) that had an older GTK2.