8178380: Module system implementation refresh (5/2017)
Reviewed-by: lfoltan, hseigel, mchung, sspitsyn
Contributed-by: alan.bateman@oracle.com, serguei.spitsyn@oracle.com

8171971: Fix timing bug in JVM management of package export lists
Summary: Reduce the number of fields that maintain export state and use Module_lock to access these fields
Reviewed-by: acorn, sspitsyn, lfoltan

8170672: Event-based tracing to support classloader instances
Reviewed-by: hseigel, egahlin

8169734: Update uses of string "java.base" to macro
Summary: Replaced instances of "java.base" string with JAVA_BASE_NAME macro
Reviewed-by: sspitsyn, dcubed

8166145: runtime/threads/ThreadInterruptTest3 fails with ExitCode 0
Summary: Added new hashtables logging tag and used it print out the table performance details.
Reviewed-by: coleenp, dholmes

8160356: invalid suffix on literal warning is occurred with GCC 6
Summary: Add whitespace separation
Reviewed-by: kbarrett, kvn
Contributed-by: yasuenag@gmail.com

8159262: Walking PackageEntry Export and ModuleEntry Reads Must Occur Only When Neccessary And Wait Until ClassLoader's Aliveness Determined
Summary: Fixed an issue in class unloading to delay walk until class loader's aliveness is determined of modularity lists to remove dead modules
Reviewed-by: coleenp, dholmes, sspitsyn, zgu

8156871: Possible concurrency issue with JVM_AddModuleExports
Summary: Need for single PackageEntry flag to determine a package's unqualifed export state.
Reviewed-by: acorn, ctornqvi, dholmes, jiangli

8152404: Stabilize PackageEntry::package_exports_do
Summary: Re-defined PackageEntry member variables and export checking functions
Reviewed-by: dholmes, hseigel

8156156: Add module specific NMT MemoryType
Summary: Change NMT tag for allocations for modules support to mtModule
Reviewed-by: coleenp, lfoltan, gtriantafill

8152845: Improve PackageEntry and ModuleEntry print methods for future logging
Summary: Changed print methods for PackageEntry and ModuleEntry to take an outputStream
Reviewed-by: lfoltan, hseigel, coleenp

8142968: Module System implementation
Summary: Initial integration of JEP 200, JEP 260, JEP 261, and JEP 282
Reviewed-by: acorn, ccheung, coleenp, ctornqvi, dholmes, dsimms, gtriantafill, iklam, jiangli, mgronlun, mseledtsov, cjplummer, sspitsyn, stefank, twisti, hseigel, lfoltan, alanb, mchung, dfazunen
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, harold.seigel@oracle.com, lois.foltan@oracle.com, calvin.cheung@oracle.com, christian.tornqvist@oracle.com, erik.joelsson@oracle.com, george.triantafillou@oracle.com, igor.ignatyev@oracle.com, ioi.lam@oracle.com, james.laskey@oracle.com, jean-francois.denise@oracle.com, jiangli.zhou@oracle.com, markus.gronlund@oracle.com, serguei.spitsyn@oracle.com, staffan.larsen@oracle.com, sundararajan.athijegannathan@oracle.com