taglib: update to 1.12.

TagLib 1.12 (Feb 16, 2021)
==========================

* Added support for WinRT.
* Added support for Linux on POWER.
* Added support for classical music tags of iTunes 12.5.
* Added support for file descriptor to FileStream.
* Added support for 'cmID', 'purl', 'egid' MP4 atoms.
* Added support for 'GRP1' ID3v2 frame.
* Added support for extensible WAV subformat.
* Enabled FileRef to detect file types based on the stream content.
* Dropped support for Windows 9x and NT 4.0 or older.
* Check for mandatory header objects in ASF files.
* More tolerant handling of RIFF padding, WAV files, broken MPEG streams.
* Improved calculation of Ogg, Opus, Speex, WAV, MP4 bitrates.
* Improved Windows compatibility by storing FLAC picture after comments.
* Fixed numerical genres in ID3v2.3.0 'TCON' frames.
* Fixed consistency of API removing MP4 items when empty values are set.
* Fixed consistency of API preferring COMM frames with no description.
* Fixed OOB read on invalid Ogg FLAC files (CVE-2018-11439).
* Fixed handling of empty MPEG files.
* Fixed parsing MP4 mdhd timescale.
* Fixed reading MP4 atoms with zero length.
* Fixed reading FLAC files with zero-sized seektables.
* Fixed handling of lowercase field names in Vorbis Comments.
* Fixed handling of 'rate' atoms in MP4 files.
* Fixed handling of invalid UTF-8 sequences.
* Fixed possible file corruptions when saving Ogg files.
* Fixed handling of non-audio blocks, sampling rates, DSD audio in WavPack files.
* TableOfContentsFrame::toString() improved.
* UserTextIdentificationFrame::toString() improved.
* Marked FileRef::create() deprecated.
* Marked MPEG::File::save() with boolean parameters deprecated,
  provide overloads with enum parameters.
* Several smaller bug fixes and performance improvements.

(wiz)