libogg: Update to 1.3.4

libogg: Update to 1.3.4

Changelog:

"Version 1.3.4 (2019 August 30)

* Faster slice-by-8 CRC32 implementation.
  see https://lwn.net/Articles/453931/ for motivation.
* Add CMake build.
* Deprecate Visual Studio project files in favor of CMake.
* configure --disable-crc option for fuzzing.
* Various build fixes.
* Documentation and example code fixes.

Version 1.3.3 (2017 November 7)

* Fix an issue with corrupt continued packet handling.
* Update Windows projects and build settings.
* Remove Mac OS 9 build support.

Version 1.3.2 (2014 May 27)

* Fix an bug in oggpack_writecopy().

Version 1.3.1 (2013 May 12)

* Guard against very large packets.
* Respect the configure --docdir override.
* Documentation fixes.
* More Windows build fixes."

Signed-off-by: Matthias Fischer <matthias.fischer@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>