6610906: inexplicable IncompatibleClassChangeError
Summary: dependency check must treat polymorphic interfaces consistently
Reviewed-by: kvn, never, sgoldman
./bootstrap/bin/javac
./bootstrap/bin/javadoc
./bootstrap/bin/javah
./bootstrap/lib/doclets.jar
./bootstrap/lib/javac.jar
./bootstrap/lib/javadoc.jar
./bootstrap/lib/javah.jar
./lib/classes.jar
./lib/src.zip