in some configurations, time cannot be called from makefiles

cant use cat directly to concatenate multiple asn1 files, because if
there is no newline at the end of the file, the last END keyword is
joined to the next word, provoking a parsing error from the ASN1
compiler

If there is a single interface in a function it was a priori set as
unprotected. However this may go against an explicit user setting of
protected.