Comment 90 for bug 219385

I assume the gtk2 module is only for plugin support.
There may be a few possible solutions to support gtk2 plugins.
e.g. one option might be to use a completely separate build to make a gtk2 libxul.

But I think the path here should be to get small changesets landed, so the whole series doesn't need to be remerged with trunk while other changesets are reviewed/modified. Leaving out gtk2 plugins is a good way to reduce the complexity in what gets done first.