Fix uncheched warnings for code instrumented by Clover

Follow up of CLOV-1399:

I tried it with 3.2.2 same issue for every instrumented class.
[WARNING] /Users/kasperni/workspace/cake-container/cake-container/cake-container-api/target/clover/src-instrumented/org/cakeframework/container/RuntimeContainerException.java:[24,758] unchecked cast
required: I
found: java.lang.Object

It is this generated line that generates the warning:

return (I) java.lang.reflect.Proxy.newProxyInstance(l.getClass().getClassLoader(), l.getClass()
.getInterfaces(), h);

It can be solved by adding a @SuppressWarnings("unchecked") to the instrumented file:

@SuppressWarnings("unchecked")
public static <I, T extends I> I lambdaInc(final int i, final T l, final int si)

Unknown macro: {........}