I just fetched emacs-21.3-fullbin-i386.tar.gz from ftp.gnu.org/pub/gnu/emacs , unpacked it, amd found a file "test.java~" at the same level as the "emacs-21.3" directory.

No damage done, but I think you are a little sensitive about the possibility of unexpected 'easter eggs' in emacs at the moment, you might want to ask Jason Rumney what is going on ...

Chris Ward.