[Dillo-dev] Should --enable-ansi be removed?

I tried enabling it out of curiosity, and I see that the code doesn't come close to compiling with it.

Since it complains a lot about the various MSG(...) macros (warning: anonymous variadic macros were introduced in C99), I'm guessing that the answer will be yes.

To save any time spent discussing whether warnings with a rarely-used option can be ignored, I should mention that it also gave errors for, e.g., bitvec, apparently because a struct is returned. I can't imagine that we'd want to start changing around such things for the sake of this.