net/zerotier: build on arm and 10.4 x86/x64 & improve compiler settings
- use improved C++14 settings contributed by jbeich@
- correct LICENSE_FILES via mat@ and jbeich@
- fixes ARM build from PR#231335
- submitted by Vincent Milum <freebsd@darkain.com>
- upstream https://github.com/zerotier/ZeroTierOne/pull/848
Submitted by: Vincent Milum <freebsd@darkain.com>
Reported by: jbeich
Approved by: jrm (mentor)
Obtained from: https://github.com/zerotier/ZeroTierOne/pull/848
Differential Revision: https://reviews.freebsd.org/D16880