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
fixed initializer and Wformat warnings
Merge pull request #1094 from BytesGalore/fix_print_format_warnings_test_vtimer

test:test_vtimer fixed initializer and Wformat warnings
make: print error if make was executed in the root

Fixes #1104, alternative to #1178.