libid3tag: Update to version 0.16.3

libid3tag: Update to version 0.16.3

- Update from version 0.15.1b to 0.16.3
- Update of rootfile
- A new fork has been made of the libid3tag. This is now being managed by Tenacity.
   The latest version has a library change so that any package using the old version will
   work with the new one.
- Changelog
    0.16.3
	This release fixes backwards compatibility issues with libid3tag 0.15.1b.
	    #8 - Define a separate library soversion, which is set to 0 to preserve ABI
		 compatibility.
	Note: no functionality was changed in this release. This and the previous release
		 are identical in terms of functionality.
	Compatibility
		With the changes listed above, libid3tag is both source compatible and
		 binary (ABI) compatible with programs linked against libid3tag 0.15.1b.
		We will continue to guarantee this compatibility for as long as we can.
		Existing libid3tag 0.15.1b packages can be easily switched to this
		 version without breakage.
	Reporting Issues or Contributing Patches
		Our version of libid3tag contains all kinds of integrated packages plus
		 our own tweaks. However, if you have a patch or two that haven't been
		 integrated into our fork yet, please feel free to open a pull request.
		 Just like Tenacity, we aim to have libid3tag packaged and working on as
		 many platforms as we can without patches.
    0.16.2
	Fix null pointer dereference in id3_ucs4_length (CVE-2017-11550)
    0.16.1
	Fix exported CMake config file
	Fix pkgconfig file name to match Linux distro packages
	 (id3tag instead of libid3tag).
    0.16.0
	Add CMake build system
	Remove autotools build system
	Install pkgconfig and CMake config files
	Apply patches from Debian, Fedora, Arch, and Gentoo

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>