Add/update android-changed markers for j.l.Boolean and Void.

This change covers the two boxed primitives not covered in
http://r.android.com/510136, in much the same way.

(The previous state of Void was odd: the commented-out code was not
from upstream but from a previous android change. Now, the
commented-out code is from OpenJDK 8u121-b13.)

Test: make checkbuild
Change-Id: I9ce18632e2dd479f61036084f555fde72ad20378