Besides, it's just a few characters to change the regexp into an authorship-preserving one:

    find org.scala-ide.sdt.core org.scala-ide.sdt.core.tests -iname "*.scala" -print0 | xargs -0 perl -p0e 's!/\*+.*?Copyright[^@]*?(\n\s\*\s+@)?([^@]*?\*/.*?)(package)!$1?"/*$1$2$3":"$3"!esg' -i