[REFACTOR] moved PICO util stuff to Saros Core.

Change-Id: I5c124e3afe32881bc12449bcd34a6da34fde111e
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1442
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>