gst1-plugins-bad: update to 1.16.2

Switched to meson.

Fixed license information.

Several Makefile cleanups for consistency between packages.

Enabled and added packages for a bunch of plugins.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

multimedia/gst1-plugins-bad/patches/001-no-translations.patch

@@ -1,26 +0,0 @@
---- a/Makefile.am
-+++ b/Makefile.am
-@@ -2,11 +2,11 @@ DISTCHECK_CONFIGURE_FLAGS=--enable-gtk-doc
- 
- SUBDIRS = \
- 	gst-libs gst sys ext pkgconfig \
--	m4 common docs tests po tools
-+	m4 common docs tests tools
- 
- DIST_SUBDIRS = \
- 	gst gst-libs sys ext pkgconfig \
--	m4 common docs tests po tools
-+	m4 common docs tests tools
- 
- EXTRA_DIST = \
- 	depcomp \
---- a/configure.ac
-+++ b/configure.ac
-@@ -2686,7 +2686,6 @@ ext/dtls/Makefile
- ext/webrtc/Makefile
- ext/webrtcdsp/Makefile
- ext/ttml/Makefile
--po/Makefile.in
- docs/Makefile
- docs/plugins/Makefile
- docs/libs/Makefile