Change company name to "rev.ng Labs Srl" in all license headers
to reflect changed company name and legal status
Add missing license headers to files that didn't have one
This commit moves the logic for the computation of field sizes to a
separate .cpp file.
At the moment this is only used by DLAComputeUpperMemberAccess, but in
the future it will also be re-used DLAComputeNonInterferingComponents,
which at the moment employs very similar code.