Update to upstream release 0.20.2; fix build

Detailed log:

• Update to upstream release 0.20.2
• Transfer maintainer'ship from crees to riggs
• Port now requires C++14
• Fix build on stable/11 (--disable-libwrap)
• New non-default OPTIONs:
  • SMB: support for libsmbclient
  • SNDIO: support for sndio
  • SOXR: support soxr resampler
  • YAJL: SoundCloud support via devel/yajl

PR: 216120
Submitted by: riggs (maintainer)
Approved by: crees (previous maintainer)