Migrate Java code to separate QL repo.

java/ql/src/Likely Bugs/Serialization/IncorrectSerialVersionUID.java

@@ -0,0 +1,11 @@
+class WrongNote implements Serializable {
+	// BAD: serialVersionUID must be static, final, and 'long'
+	private static final int serialVersionUID = 1;
+	
+	//...
+}
+
+class Note implements Serializable {
+	// GOOD: serialVersionUID is of the correct type
+	private static final long serialVersionUID = 1L;
+}