Merge pull request #748 from jimparis/travis-cleanup

Travis cleanup
Merge pull request #737 from jimparis/slip-buffer-overflow-fixes

Increase fixed filename sizes in SLIP tunnels
Fixed hardware detection.

The previous chip detection was inspired by the old IP65 driver code. For some reason it didn't work as expected. The new code is simpler and based on this statement in the chip datasheet: "The upper byte always reads as 33h and can be used to help determine the I/O location of the LAN91C96."
Merge pull request #750 from oliverschmidt/master

Fixed hardware detection.
Add missing semi-colon
Merge pull request #753 from kartben/patch-1

Add missing semi-colon
Add ADuCRF101 library code from Analog Devices
Add CMSIS library code from ARM
Add initial ADuCRF101 CPU support
Add initial EV-ADuCRF101MKxZ platform support
Add ADuCRF101 radio driver
Fix ADI radio engine driver and add hook for packet reception
Move RF RX into its own process
Add button sensor support (BOOT button)
Add platform LED driver
Implement rtimers for ADuCRF101
Add dummy uart0/uart1 headers that some examples require
Add sniffer support to ADuCRF101

This works with the examples/cc2538dk/sniffer/ project and the
corresponding "sensniff" host-side tool.
Add README.md for ev-aducrf101mkxz platform
Add IAR compiler support for ADuCRF101