Removed the xmac.c code
Removed the lpp.c code
Don't compile webserver-ipv6 for the sky platform, as it is a little too small. Use the larger exp5438 instead
Remove Sensinode tests from travis
Merge pull request #42 from g-oikonomou/remove-sensinode-tests

Remove Sensinode tests from travis
Avoid access to the address register during auto-increment.

It cannot be ruled out that access to the address register triggers
an address auto-increment. Therefore a temporary address register
shadow is introduced to replace the access to the address regsiter.

Additionally there are several minor beautifications.
Merge pull request #488 from oliverschmidt/master

Avoid access to the address register during auto-increment.
Merge pull request #484 from adamdunkels/push/travis-fix

Partial fix for travis
Merge pull request #479 from adamdunkels/push/cleanup-xmac-and-lpp

Remove xmac.c and lpp.c