Inserts missing IPv6 Hop-By-Hop RPL Option at first hop
Add MSPSim Logging
Merge pull request #336 from cmorty/MSPSim_Log

Add MSPSim Logging
Merge pull request #318 from cetic/fix-rpl-hbh-1st-hop

Inserts missing IPv6 Hop-By-Hop RPL Option at first hop
Disable the IPv4 travis job
Merge pull request #343 from g-oikonomou/travis-disable-ipv4

Disable the IPv4 travis job
Removed unnecessary code from resolver.
Merge pull request #345 from oliverschmidt/master

Removed unnecessary code from resolver.
Initialize tcpip process before resolver process.

Since introduction of mDNS (https://github.com/contiki-os/contiki/commit/f145c17039b778cde1d53b6828757cd91dc8480a)
the resolver process initialization depends on the tcpip process
already being initialized (because of the call to udp_new()).
Merge pull request #346 from oliverschmidt/master

Initialize tcpip process before resolver process.
Fixed fail to build from source due to a bad "&nbr->lladdr" reference
Removed unnecessary code from resolver.
Merge pull request #351 from oliverschmidt/master

Removed unnecessary code from resolver.
Small fixes to networking files

1. Added #include header
2. Fixed #defines that weren't updated
3. Small change to comment that now points to correct RFC section
Allow text screen memory to be aligned to 0x2000.
Merge pull request #356 from oliverschmidt/master

Allow text screen memory to be aligned to 0x2000.
Fixed a typo in net/uipopt.h
1. Added a missing '&' in lib/trickle-timer.h
2. Removed executable permissions of lib/trickle-timer.c & .h
Updates CC2538 GPIO

1. Fixes two of the comments to GPIO macros. They were copied but not
updated.
2. Adds SET and CLR macros for controlling GPIO pins.
Add conf checks to CC2538dk conf file

Allows for specific apps to control more settings of the platform.