8163991: Fix license and copyright headers under test/jdk/javadoc/ and test/tools/javac/
Reviewed-by: anazarov, iris, jjg, shurailine
Contributed-by: Sandeep Konchady <sandeep.konchady@oracle.com>

8071982: Update tests for revamped Doclet API
8071984: Update test cases for repeating and type annotations output in javadoc
Reviewed-by: ksrini, bpatel
Contributed-by: oleg.barbashov@oracle.com