net/3proxy: Update to 0.7.1.3, Assign MAINTAINER

• Update to 0.7.13
• Add DISTVERSIONPREFIX (upstream changed)
• Assign MAINTAINER'ship
• Remove src_proxy.c patch (upstreamed)

Changes:

https://github.com/z3APA3A/3proxy/releases/tag/3proxy-0.7.1.3

PR: 203764
Submitted by: Tim <timp87 gmail.com>