opus-1.5.2-160000.2.2

- Update to 1.5.2:
  * fix build issues and bugs for other platforms

- Update to 1.5.1:
  * Significant improvement to packet loss robustness using
    Deep Redundancy (DRED)
  * Improved packet loss concealment through Deep PLC
  * Low-bitrate speech quality enhancement down to
    6 kb/s wideband
  * Improved x86 (AVX2) and Arm (Neon) optimizations
  * Support for 4th and 5th order ambisonics

- Update to version 1.4:
  * Improved tuning of the Opus in-band FEC (LBRR). See the
    https://gitlab.xiph.org/xiph/opus/-/issues/2360 for details
  * Added a OPUS_SET_INBAND_FEC(2) option that turns on FEC, but
    does not force SILK mode (FEC will be disabled in CELT mode)
  * Improved tuning and various fixes to DTX
  * Added Meson support, improved CMake support
- Change Source to new home on github.
- Use autosetup, make_build and ldconfig_scriptlets macros.
- Move AUTHORS and README docs to devel package.
- Drop patches fixed upstream:
  * opus-Fix-celt-decoder-assertion-when-using-OPUS_CUSTOM.patch
  * opus-Silk-CNG-adapts-faster.patch
  * opus-Silk-fix-arm-optimization.patch

- Backport of an upstream fix for celt decoder:
  * opus-Fix-celt-decoder-assertion-when-using-OPUS_CUSTOM.patch: When
    using OPUS_CUSTOM, `CELTDecoder->end` can be larger than 21.
    Assert against 25 instead in OPUS_CUSTOM builds.

- Add 2 upstream bug fixes for Silk:
  * opus-Silk-CNG-adapts-faster.patch: Silk CNG adapts faster to
    received packets with lower gains.
  * opus-Silk-fix-arm-optimization.patch: Avoid processing LPC
    coeffs beyond the given order in NEON optimizations.

- Own %{_datadir}/aclocal: when we might switch to pkgconf instead
  of pkg-config, nothing in the build root is 'accidentally' owning
  this directory for us.

- Update to version 1.3.1
  * This release fixes an issue with the analysis on files with
    digital silence (all zeros), especially on x87 builds
    (mostly affects 32-bit builds).
  * Two new features:
    + A new OPUS_GET_IN_DTX query to know if the encoder is in
    DTX mode (last frame was either a comfort noise frame or
    not encoded at all)
    + A new (and still experimental) CMake-based build system
    that is eventually meant to replace the VS2015 build
    system (the autotools one will stay).

- Update to 1.3:
  - improved speech/music detection based on a neural network
  - low-bitrate speech improvements
  - support for immersive audio using ambisonics
  - tone quality improvements
  - updates to the Opus standard (rfc 8251) are on by default
  - security improvements
- Clean up SPEC to the latest standards

- Update to version 1.2.1:
  + This fixes an issue where the encoder can misdetect that the
    signal is SWB instead of FB, lowpassing the signal. This patch
    makes the encoder much more careful about doing that.

- Cleanup with spec-cleaner