Fixed CMake bug.
A bug which for whatever reason doesn't
show up on Mac OS but confirmed on Linux.
Target link libraries was not properly declared
for the 'drivers' library and could not link to libat90.
Removed 'cmake_minimum_required'
from all sub CMakelists.txt.
This statement is really only needed
in the master CMake file and has no
function in the subfiles.
Less is more.
Removed headerfiles from CMakeLists.txt
CMake handles headerfiles automatically
hence they don't need to be specified
as the sourcefiles. Less is more.
CMake: Changed minimum required version to 2.8.12
This allows us to use target_include_directories()
which works simular to include_directories() but
specifies the target. This is generally recomended.
Also deleted link_directories in that is was never
necessary.
Merge branch 'master' of https://github.com/UnicornRaceEngineering/g5-nodes