8181759: add explicit @build actions for jdk.test.lib classes in all :tier1 tests
Reviewed-by: alanb

8157957: ClassNotFoundException: jdk.test.lib.JDKToolFinder
Reviewed-by: coleenp, gtriantafill, mseledtsov, iignatyev, dholmes, dsamersoff

8150998: Fix module dependences in java/lang tests
Reviewed-by: mchung

8146773: java/lang/ref/CleanerTest.java CleanerTest.testRefSubtypes() fails
8148352: CleanerTest fails: Cleanable should have been freed
Summary: relax gc timing constraints
Reviewed-by: dfuchs

8146671: [TEST BUG] java/lang/ref/CleanerTest.java required more memory for -UseCompressedOops runs
Reviewed-by: joehw

8146028: Common Cleaner for finalization replacements in OpenJDK
Reviewed-by: dfuchs, alanb, chegar, plevart

8146012: CleanerTest fails: Cleanable should have been freed
Summary: Simplify cleanables being called and use WhiteBox to trigger GC
Reviewed-by: chegar

8138696: java.lang.ref.Cleaner - an easy to use alternative to finalization
Reviewed-by: mchung, mr, chegar, plevart, kbarrett, dholmes