Log Message:
libsndfile: Update to 1.0.29

Version 1.0.29 (2020-08-15)
  * Add support for Opus files.
  * Autotool build system improvements.
  * CMake build system improvements.
  * Fixes for: CVE-2017-12562, CVE-2017-17456, CVE-2017-17457, CVE-2018-19661,
    CVE-2018-19662, CVE-2018-19758 and CVE-2019-3832.
  * Add BWF v2 loudness parameters.
  * Wave64: Permit and skip arbitrary chunks prior to the data chunk.
  * Fix ASAN crash in wavlike_ima_seek().
  * Fix IMA-ADPCM encoding for AIFF files.
  * sndfile-convert: Handle gsm, vox and opus extensions the same way.
  * Add SFC_SET_OGG_PAGE_LATENCY_MS command to get Ogg page latency for Ogg Opus
    files.
  * Fix parsing of some SD2 files.
  * Documentation updates.
  * Minor bug fixes and improvements.