git: openjdk/amber: amber-demo-II: 2 new changesets

[duke]

Changeset: f5534a15
Author:    Vicente Romero <vicente.romero at oracle.com>
Date:      2020-06-01 15:25:45 +0000
URL:       https://git.openjdk.java.net/amber/commit/f5534a15

add explanatory note to ::permittedSubclasses and ::isSealed

! src/java.base/share/classes/java/lang/Class.java

Changeset: 1119c65b
Author:    duke <duke at openjdk.org>
Date:      2020-06-01 19:26:57 +0000
URL:       https://git.openjdk.java.net/amber/commit/1119c65b

Automatic merge of sealed-types into amber-demo-II