8176327: javac produces wrong module-info
8178518: Add method JavaFileManager.contains
Reviewed-by: jlahoda

8175560: Drop String pkgName from javax.tools.JavaFileManager.getLocationForModule(Location location, JavaFileObject fo, String pkgName)
Reviewed-by: jjg

8173393: Module system implementation refresh (2/2017)
Reviewed-by: mcimadamore, mchung, alanb
Contributed-by: alan.bateman@oracle.com, mandy.chung@oracle.com

8163190: Clarify JavaFileManager use of \"module location\"
Reviewed-by: jlahoda

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

8073550: java* tools: replace obj.getClass hacks with Assert.checkNonNull or Objects.requireNonNull
Summary: replace getClass() with approapriate NPE checks
Reviewed-by: jjg
Contributed-by: aleksey.shipilev@oracle.com

8054834: Modular Source Code
Reviewed-by: alanb, chegar, ihse, mduigou
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, chris.hegarty@oracle.com, erik.joelsson@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, magnus.ihse.bursie@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, paul.sandoz@oracle.com