See http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=342

The files:

find . -name \*.spp
./jdk/src/share/classes/sun/net/idn/uidna.spp
./jdk/test/sun/net/idn/nfscis.spp
./jdk/test/sun/net/idn/nfscsi.spp
./jdk/test/sun/net/idn/nfscss.spp
./jdk/test/sun/net/idn/nfsmxp.spp
./jdk/test/sun/net/idn/nfsmxs.spp

Are binary files in the open "source" repository. If at all possible, we really do not want binary files in the source repository, but if this is absolutely necessary, please add a README file explaining what these files are and how they were created. If they could be created on the fly, that would be a vast improvement. Refer to the IcedTea issue above for more details.