8142968: Module System implementation
Summary: Initial integration of JEP 200, JEP 260, JEP 261, and JEP 282
Reviewed-by: jjg, jlahoda, vromero, mcimadamore, bpatel, ksrini, darcy, anazarov, dfuchs
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, jan.lahoda@oracle.com, vicente.romero@oracle.com, andreas.lundblad@oracle.com, andrey.x.nazarov@oracle.com, chris.hegarty@oracle.com, erik.joelsson@oracle.com, kumar.x.srinivasan@oracle.com, sundararajan.athijegannathan@oracle.com

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

8029230: Update copyright year to match last edit in jdk8 langtools repository for 2013
Reviewed-by: ksrini
Contributed-by: steve.sides@oracle.com

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

8006566: Remove transient lambda-related guards from JavacParser
Summary: Remove transitional internal flag for allowing intersection types in cast
Reviewed-by: jjg

8005282: Use @library tag with non-relative path for javac tests
Reviewed-by: jjg

8002099: Add support for intersection types in cast expression
Summary: Add parser and type-checking support for intersection types in cast expressions
Reviewed-by: jjg