graphite2 - security update

Multiple vulnerabilities have been found in the Graphite font rendering
engine which might result in denial of service or the execution of
arbitrary code if a malformed font file is processed.

For the oldstable distribution (wheezy), these problems have been fixed
in version 1.3.5-1~deb7u1.

For the stable distribution (jessie), these problems have been fixed in
version 1.3.5-1~deb8u1.

For the testing distribution (stretch), these problems have been fixed
in version 1.3.5-1.

For the unstable distribution (sid), these problems have been fixed in
version 1.3.5-1.

We recommend that you upgrade your graphite2 packages.