gst1-plugins-bad: bump version to 1.12.0

gst1-plugins-bad: bump version to 1.12.0

Remove non-existant configure options:

  --disable-mimic:
    https://github.com/GStreamer/gst-plugins-bad/commit/ad661999ad2c79a5d7721f0eb1e7f1f83a304224

  --enable-dataurisrc:
    https://github.com/GStreamer/gst-plugins-bad/commit/de4bb6e1d4793637fd72d7316d06ebba4148583e

  --enable-videomeasure:
    https://github.com/GStreamer/gst-plugins-bad/commit/ca3020cf46d49d8e3fd54ec323b3a17cd389d780

  --enable-apexsink, --disable-nas, --disable-linsys, --enable-sdl,
  --disable-sdltest, --disable-libvisual, --disable-timidity,
  --disable-sndio, --disable-wininet, --disable-xvid,
  --enable-cdxaparse, --enable-dccp, --enable-hdvparse, --enable-mve,
  --enable-nuvdemux, --enable-patchdetect, --enable-sdi, --enable-tta,
  --disable-pvr:
    https://github.com/GStreamer/gst-plugins-bad/commit/9b5de053995488d5ddc78c1bf4df651101271d70

[Peter: split out webrtc rename to a separate patch, tweak dataurisrc help]
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>