public static String classToJavaFileName(String longName) {
        return longName.replace('.', '/') + ".java";
	}
Returns the 'package' part of a long name. This is everything before the
last dot.

@param longName The long name.
@return The package part.
common-parent/codegen/src/main/java/com/speedment/common/codegen/util/Formatting.java