add networking helper class
allow AlohaMac to to use addresses of Ethernet frames

- this allows to transparently use the SDR as a fake Ethernet device
- separate between broadcast and unicast transmission
add unified AlohaMac Tun/Tap radio example
Simplifying stack components so they use the default ports.
Merge pull request #8 from andrepuschmann/next_alohamac_fresh

AlohaMac changes for the next Iris release
Isolating unix-only functionality with #ifdefs
Minor edits to avoid namespace clashes and fix windows builds
in signalscaler, add parameter to limit number of samples to look for maxValue
add script to create TUN/TAP devices in an easy way
Merge pull request #9 from andrepuschmann/next_misc

Minor fixes
Merge pull request #22 from suttonpd/master

Adding Andre's work