Add microbenchmarks for the INTERPRET- functions
Add microbenchmarks for the INTERPRET- functions

... renamed /naive to -interpret

... now that repetition time is variable, this test doesn't hang as long as
before can be enable safely.

... one -interpret test per normal test

... also includes some last-minute tweaks to benchmark output and repetition
times.

ivan4th/commonqt,Shinmera/commonqt,ivan4th/commonqt,Shinmera/commonqt,ivan4th/commonqt