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

8062348: langtools tests should close file manager (group 1)
Reviewed-by: darcy

8029715: test needs bugID added to @bug tag
Summary: Adding forgotten bug number
Reviewed-by: vromero

6557966: Multiple upper bounds of the TypeVariable
Summary: Adjusting javax.lang.model javadoc regarding IntersectionType, IntersectionType.accept now calls visitIntersection for all kinds of IntersectionTypes.
Reviewed-by: darcy, vromero
Contributed-by: joe.darcy@oracle.com, jan.lahoda@oracle.com

6499673: Assertion check for TypeVariable.getUpperBound() fails.
Summary: Fix TypeVariable.getUpperBound to return results as specified
Reviewed-by: jjg