shell:ps: SCHEDSTATISTICS cols only if needed
Introduced a cleaned-up cpu/core interface

- Included a collection of cpu-dependent headers in core/include/arch
- Extracted all interfaces that need to be implemented for a cpu
- Created a mapping between those interfaces and the old ones
- added flag for disabling arch interface
- added missing state to lpm_arch interface
- added arch interface for reboot
- fixed newline issues that were pointed out
- documentation fixes to cpu-core interface
Merge pull request #507 from haukepetersen/core_cpu_interface

Introduced a cleaned-up cpu/core interface
Merge pull request #1122 from Kijewski/ps-SCHEDSTATISTICS

shell:ps: SCHEDSTATISTICS cols only if needed
typo fix
removed unreachable code
msba2: add pseudoterm license
Merge pull request #1134 from kaspar030/pseudoterm_license

msba2: add pseudoterm license
Merge pull request #1132 from jan-schreib/master

Removed unreachable code and fixed a typo.
%s/PROJECT/APPLICATION/g
fixup pkg/openwsn
fixup - undo pkg/oonf_api changes