[opus] opusfile 0.12 release

[Ralph Giles]

I'm pleased to announce the release of opusfile 0.12

The opusfile library provides seeking, decode, and playback of Opus
streams in the Ogg container (.opus files) including over http(s) on
posix and windows systems.

opusfile depends on libopus and libogg. The included opusurl library
for http(s) access depends on opusfile and openssl.

Changes since the v0.11 release:

 - Fix stack overflow buffering out-of-sequence streams.
 - Fix possible divide-by-zero.
 - Fix issues with seeking in the win32 backend.
 - Fix an issue where the seek algorithm could be confused
   by stream data changing between reads.
 - Clean up compiler and scan-build warnings.
 - Avoid use of the deprecated ftime() function
   which has Y2038 problems.
 - Remove undefined behaviour memcpy(NULL) in op_read_native().
 - Visual Studio project files updated for libogg 1.3.4 library name
change.
 - Various build systems updates.
 - Various integration and testing environment improvements.

This release is backward-compatible with the previous release. We
recommend all users upgrade.

Note that because of the removal of certificate store hooks in openssl
1.1.1 and later, there are unfortunately no supported versions of that
library which can be used with the code in opusurl to validate https
responses against the system certificate store on Windows. Using the
system default access to the certificate store on other platforms works
fine.

Source code:

  https://downloads.xiph.org/releases/opus/opusfile-0.12.tar.gz
  https://downloads.xiph.org/releases/opus/opusfile-0.12.zip

SHA-256 checksums:

   
118d8601c12dd6a44f52423e68ca9083cc9f2bfe72da7a8c1acb22a80ae3550b  opusf
ile-0.12.tar.gz
   
7f44575596b78d7787c1865b9653e2a71546ff1ae77d87c53ab16dcc7af295ba  opusf
ile-0.12.zip

No Windows build is available for this release. Developers should
integrate the source code directly into their applications.

Programming documentation is available in tree and online at 
https://opus-codec.org/docs/.

The library is functional, but there are likely issues we didn't find
in our own testing. Please give feedback on this mailing list, in #opus
on irc.freenode.net, or at https://gitlab.xiph.org/xiph/opusfile.

Thanks to everyone who contributed!

Ralph Giles
Xiph.Org Foundation for Open Multimedia
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