updated default project

* use RIOT submodule and fix an include for the default project
* made default project ready for nativenet
* use config only for MSBA2 in default project
use RIOT submodule and fixed output of hello-world project
use submodule and fixed LED control in hello-world-blinker
use submodule in pingpong
use RIOT submodule for pingpong_sync
adapted tlayer project to current RIOT version and use RIOT submodule for tlayer project
use RIOT submodule for sixlowpan project
removed empty libccpa folder
added Makefile.unsupported to exit Make process for currently unsupported platforms
checked state of all projects for platforms in boards

* checked only if compiling
* did not check for thirdparty_boards
* marked not compiling projects by including Makefile.unsupported
Merge pull request #22 from OlegHahm/release_fixes

Release fixes