plugins: uddate gst_type_mark_as_plugin_api() calls

ext/aalib/gstaasink.c

ext/aalib/gstaatv.c

ext/dv/gstdvdec.c

ext/flac/gstflacenc.c

ext/gdk_pixbuf/gstgdkpixbufoverlay.c

ext/jack/gstjackaudiosink.c

ext/jpeg/gstjpegdec.c

ext/lame/gstlamemp3enc.c

ext/libcaca/gstcacasink.c

ext/libcaca/gstcacatv.c

ext/shout2/gstshout2.c

ext/speex/gstspeexenc.c

ext/twolame/gsttwolamemp2enc.c

ext/vpx/gstvpxdec.c

ext/vpx/gstvpxenc.c

ext/wavpack/gstwavpackenc.c

gst/alpha/gstalpha.c

gst/audiofx/audioamplify.c

gst/audiofx/audiochebband.c

gst/audiofx/audiocheblimit.c