Add support for miniupnp versions >= 1.5 - On Mac OS X 10.10 (Yosemite), this build did not work with the default   versions of miniupnp from homebrew. This patch fixes it.
Add support for miniupnp versions >= 1.5
- On Mac OS X 10.10 (Yosemite), this build did not work with the default
  versions of miniupnp from homebrew. This patch fixes it.

tutor-web/smileyCoin,tutor-web/smileyCoin,tutor-web/Auroracoin,tutor-web/smileyCoin,aurarad/auroracoin,tutor-web/smileyCoin,tutor-web/smileyCoin,tutor-web/Auroracoin,tutor-web/Auroracoin,aurarad/auroracoin,tutor-web/Auroracoin,aurarad/auroracoin,aurarad/auroracoin,aurarad/auroracoin,tutor-web/Auroracoin