Don't build PKGs twice
sys/crypto: remove assert.h include

It is not used and most platforms don't have it.
test_net_if/Makefile remove superfluous includes
Remove useless assert comments

address: https://github.com/RIOT-OS/RIOT/pull/824#issuecomment-36426297
Merge pull request #824 from LudwigOrtmann/3des_includes

sys/crypto: remove assert.h include
Merge pull request #802 from Kijewski/dont-build-pkgs-twice

Make: Don't build PKGs twice
Merge pull request #826 from LudwigOrtmann/test_net_if_cleaning

test_net_if/Makefile remove superfluous includes
enhanced RPL debugging
RPL byte order issues
Merge pull request #805 from OlegHahm/rpl_fixes

RPL: byte order fixes and debugging
removed error causing packed attribute in net_if
removed obsolete buffer
Merge pull request #833 from OlegHahm/net_if_fix

sys: net: net_if fix