fixed printf specifiers
sys/ping/ping.c: malloc size of type, not size of pointer
native: unify license headers
native/tramp.S: add missing license header
documentation: append my email to my name everywhere
Merge pull request #1143 from jan-schreib/static-code-analyser-cleanup

 sys/ping/ping.c: malloc size of type, not size of pointer
Merge pull request #1184 from LudwigOrtmann/native_license_unification

Native license unification
sys/crypto/twofish/twofish.c: removed unused variables
sys/crypto/twofish.c: removed trailing whitespace
sys/crypto/twofish/twofish.c: added macros and restored variables

Removed macros from ``sys/include/crypto/twofish.h``