tools/executor.sh: cache classpath in maven build dir

This change will make invocation more smartly.
Once you run mvn clean, invoke with newky configured classpath.
fix code name typo

I was afraid of Mimi Balguerie's real name starting with 'V' (Valgery?),
  but according to animecharactersdatabase, Mimi Balguerie seems real
  name.

Next code name may be Chiyoko Mayuzumi or Cosette Shelley.
But I don't choose either of them yet