8163136: Add print statements to java/nio/file/WatchService/LotsOfCancels.java
Summary: Add some print statements.
Reviewed-by: alanb

8160220: (fs) Tests in jdk/test/java/nio/file/WatchService leave directory trees behind
Summary: Create temporary files by default in a scratch directory.
Reviewed-by: alanb, chegar

8160687: (fs) Cannot tell which WatchService test is not deleting temp directories "work*"
Summary: Change name of "work" temp directory to "TestName"
Reviewed-by: rriggs

8029516: (fs) WatchKey cancel unreliable on Windows
Reviewed-by: chegar