android: Add support for the gcc 4.9 toolchain of the new NDK
cairo: Disable testsuite build

The build system has some quirks and fails sometimes.
glib.recipe: Add missing comma

This was causing a build failure of the gstreamer packages
openh264: Fix build on different platforms

Why can't people just use autotools...
libsrtp: Fix build on OSX/iOS and don't accidentially link to libpcap

libpcap is only used by the tests anyway.
librtmp: Fix build on OSX and probably others by passing CC and CFLAGS and LD to the build system
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
openh264: The headers are installed in include/wels, not include/openh264
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