8165109: langtools/test switches to use new CLI options
Reviewed-by: jjg, amlu

8152897: refactor ToolBox to allow reduced documented dependencies
Reviewed-by: vromero

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

8132885: langtools/test/tools/javac/sym/ElementStructureTest.java is also searching default classpath
Summary: Explicitly setting classpath when inspecting the platform classes; using the java.util.ServiceLoader instead of the javac's copy
Reviewed-by: jjg

8072480: javac should support compilation for a specific platform version
Summary: Adding a new javac option for compiling for JDK N: -release N; including history data for previous version of JDK.
Reviewed-by: erikj, ihse, jjg, mcimadamore, mr
Contributed-by: jan.lahoda@oracle.com, erik.joelsson@oracle.com, jonathan.gibbons@oracle.com