SUSE-SU-2016:1538-1 Security update for libxml2

This update for libxml2 fixes the following security issues: - CVE-2016-2073, CVE-2015-8806, CVE-2016-1839: A Heap-buffer overread was fixed in libxml2/dict.c bsc963963, bsc965283, bsc981114. - CVE-2016-4483: Code was added to avoid an out of bound access when serializing malformed strings...