RIOT-OS/RIOT — pull request #72 by mehlis (2013-07-17 18:37:07+00:00)
Title: add way to declare parameter as unused

Riot lags some way to declare, that a function parameter
is unused. This commit adds a file called "unused.h",
which defines some nice macros.

http://stackoverflow.com/questions/3599160/unused-parameter-warnings-in-c-code

this commit fixes #62 (the discussion wasn't finally over in this issue)