Don't duplicate the buffer just to null-terminate the string.
According to libFLAC API documentation, the string is already
null-terminated.

To replace g_strdup().

Replaces GLib's g_ascii_strncasecmp().

Reduce heap allocator overhead.

Reduce header dependencies.

Allow reusing Tag instances.

The "bool" type is built-in.

Merge common code.

Use the new FLACMetadataIterator C++ class, which is more powerful.

This has been deprecated by the "embcue" playlist plugin.

Merge duplicate data.

The new method pair() receives an arbitrary name/value pair.  Support
for this is being added to a few decoder plugins.

Pass a callback table to scan_file() and scan_stream(), instead of
returning a tag object.

Don't calculate the song duration when the sample rate is 0 (division
by zero crash).

Be consistent with the rest of MPD, and don't use the non-portable
header "malloc.h".

Adds mixrampdb and mixrampdelay commands.  Reads MIXRAP_START and
MIXRAMP_END tags from FLAC files and overlaps instead of crossfading.

Don't allocate each replay_gain_info object on the heap.  Those
objects who held a pointer now store a full replay_gain_info object.
This reduces the number of allocations and heap fragmentation.