glib.recipe: Add missing comma

This was causing a build failure of the gstreamer packages
gst-plugins-bad-1.0: Fix building of static plugins

I misunderstood how static recipes work. This fixes static bad plugins, and
removes a bunch of useless configure options
New recipe: icu.recipe

Cross-compilation is complicated, so has been left alone for now
harfbuzz.recipe: Now that we have ICU, we can actually build with ICU support
New recipe: libsusrsctp.recipe
New recipe: gnome-js-common.recipe
New recipe: javascriptcoregtk.recipe

Lots of hacks to build only JSC and not WebKit-GTK+
New recipe: seed.recipe
New recipe: libnice.recipe
New recipe: openwebrtc-gst-plugins.recipe
New recipe: openwebrtc.recipe