replacing umlaute and fixing address in headers Haldeneggsteig -> Universitaetsstrasse

Signed-off-by: Reto Achermann <reto.achermann@inf.ethz.ch>

Moved the performance counter harness test for usr/examples to usr/tests

--HG--
rename : usr/examples/xmpl-perfmon/Hakefile => usr/tests/perfmontest/Hakefile
rename : usr/examples/xmpl-perfmon/perfmon.c => usr/tests/perfmontest/perfmon.c