MFH or rather direct commit request to fix vulnerability in net/miniupnpc

[jbeich]

Summary

rP399209 caused a fallout in consumers some of which are yet to be fixed. Let's try backporting just the security-related bit. net/py-miniupnpc links with static library, so it needs PORTREVISION bump as well.

text
net/miniupnpc: backport TALOS-2015-0035 (aka CVE-2015-6031) fix

Direct commit as /head updated miniupnpc to a snapshot in r399209.

PR:		203705
Approved by:	portmgr? | ports-secteam?
Security:	06fefd2f-728f-11e5-a371-14dae9d210b8

Test Plan

Green build with old versions of:

• net/miniupnpc
• net/py-miniupnpc
• net-p2p/transmission-cli
• net-p2p/bitcoin

No poudriere logs as my HDD is too slow to check out entire 2015Q4 and
do proper builds.