net/quagga: Update 1.0.20160315 -> 1.0.20161017

• This release also includes 4 other fixes for undefined behaviour that may have security implications, for BGP, IS-IS and OSPFv3.

PR: 213576
MFH: r424161
Changes: https://lists.quagga.net/pipermail/quagga-users/2016-October/014477.html
Security: CVE-2016-4049
Approved by: mat (maintainer)
Approved by: ports-secteam (feld)