This update is needed for sr#852600 (libmatroska) to build

- Update to version 1.4.0
* Due to breaking ABI the soname version has been bumped to
5.0.0.
* Default symbol visibility is now "hidden", reducing binary
size.
* Converted some things pointed out by cppcheck & clang-tidy
to C++11.
* Fixed a lot of issues pointed out by clang-tidy.
* Added a function "ForceNoDefault" in the "EbmlElement" class.
* Added a function "OverwriteData" in the "EbmlElement" class
to complement the existing "OverwriteHead" function.
* A C++11 compliant compiler is now required. Several of its
features are now used in the source.
* EbmlElement::FindNextElement: fixed a buffer overflow on the
stack by one byte when the first byte read had its upper
four bits unset.
* EbmlCrc32: added a explicit assignment operator with default
implementation as an explicit copy constructor exists
(implicit assignment operators are deprecated in such cases).
- Spec cleanup

- Update to version 1.3.10:
* When reading binary elements with a size of 0, the element was
skipped by libebml instead of returned to the calling function.