[webkit-gtk] Bump dependency requirements before WebKitGTK+ 2.0

[Mario Sanchez Prada]

>[...]-----Original Message-----
> Since WebKit2GTK+ is going to depend on really new stuff already (gcc
> 4.7/clang 3, libsecret, libsoup 2.42, gst 1.0, harfbuzz, etc.) I
> propose to bump other dependencies that will allow us to remove a lot
> of #ifdefs, and remove deprecated stuff.

Looks good to me too. I personally will love to see ifdefs going away.

>[...]
> In addition to this, I wonder if we should explicitly check also gdk-
> pixbuf since it was separated from gtk+ long time ago.

I think we should.

Also, I wonder whether we should also require specific versions for some other recently added libraries, such as libsecret and libwebp, to make them explicit.

Thanks,
Mario