glib-2.0: append libffi and python-argparse to DEPENDS_virtclass-native, drop gdbus...

glib-2.0: append libffi and python-argparse to DEPENDS_virtclass-native, drop gdbus-serialization test

* DEPENDS_virtclass-native is defined in glib.inc so normal DEPENDS are
  ignored for -native builds
* gdbus-serialization test causes circular dependency dbus-glib, and
  because we cannot add dbus to DEPENDS then we had to drop this test
  so apply dcf425c5472fdee74885c4f21a851e39c84e6642 from oe.dev

(From meta-openembedded rev: 10d8c7ae116e231ed175e3a021e8e22d70a2141c)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>