8081854: Javadoc should generate named anchors for HTML4 output
Reviewed-by: ksrini

8076543: Add @modules as needed to the langtools tests
Reviewed-by: jjg, shurailine

8072945: Javadoc should generate valid and compliant HTML5 output
Reviewed-by: jjg, ksrini

8061549: Disallow _ as a one-character identifier
Summary: Underscore is no longer a one-charater identifier with -source 9
Reviewed-by: mcimadamore, jjg

8038730: Clean up the way JavadocTester is invoked, and checks for errors.
Reviewed-by: ksrini, sogoel, bpatel

8040903: Clean up use of BUG_ID in javadoc tests
Reviewed-by: ksrini

8041150: Avoid silly use of static methods in JavadocTester
Reviewed-by: ksrini

8031649: Clean up javadoc tests
Reviewed-by: jjg
Contributed-by: neil.toda@oracle.com

8025524: javadoc does not correctly locate constructors for nested classes
Reviewed-by: jjg

8025633: Fix javadoc to generate valid anchor names
Reviewed-by: jjg