This update for libebml to version 1.3.5 fixes the following issues:

* undefined behavior in EbmlElement::GetSemantic() (boo#1056669)

It also contains various upstream improvements and fixes:

* No longer insist that all mandatory elements are present,
only those for which there is no default value
* Fix reading and EBML element even though the ID was not found
within the allowed reading limit.