[easytag] (28 commits) Non-fast-forward update to branch wip/dsf-support

[David King <davidk src gnome org>]

The branch 'wip/dsf-support' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  87b756c... Read DSF header information
  9afdb55... Read ID3v2 tags from DSF files
  5c77a06... Write ID3v2.4 tags to DSF files
  90e58ab... Write ID3v2.3 tags to DSF files
  59d29a2... Move private ID3 functions into a separate header
  b9b0d04... Strip additional ID3 date fields while saving
  9817642... WIP Add tests for DSF format support

Commits added to the branch:

  593aa8f... Add a test for EtPicture boxed type copying (*)
  bfde773... Add G_SLICE=debug-blocks to test environment (*)
  4524826... Fix a double free when reading WavPack headers (*)
  8f48a76... Fix check for errors when writing WavPack tags (*)
  9e312fa... Fix double free in CDDB dialog error path (*)
  18769d8... Use a stack-allocated buffer for WavPack tags (*)
  15eec37... Simplify reading artwork description from Ogg tags (*)
  06c9eeb... Avoid superfluous use of sizeof(char) (*)
  6fcbdd1... Use the GLib slice allocator where appropriate (*)
  c0bb61c... Use GIO when reading and writing list store files (*)
  d8a9e88... Updated Hungarian translation (*)
  1342885... Use GIO when reading and writing ID3v2.4 files (*)
  dc66588... Remove unnecessary ftruncate() wrapper (*)
  928c5e1... Add -Werror=return-type to compiler flags (*)
  6532af6... Use const when fetching File_Name from an ET_File (*)
  1e4a307... Remove stray unused local CDDB code (*)
  fa6c9de... Support album artist in WavPack tags (*)
  d2ed5f6... Use memset() to zero out the WavPack read buffer (*)
  adc40e0... Clear empty tag fields when saving WavPack tags (*)
  77c2379... Read the WavPack channel mask (*)
  da0cad5... Fix string leak when reading WavPack tags (*)
  9c80df7... Read DSF header information
  f44e15e... Read ID3v2 tags from DSF files
  723b567... Write ID3v2.4 tags to DSF files
  3435ed3... Write ID3v2.3 tags to DSF files
  a814573... Move private ID3 functions into a separate header
  34cf299... Strip additional ID3 date fields while saving
  4157413... WIP Add tests for DSF format support

(*) This commit already existed in another branch; no separate mail sent