8182450: javac aborts when generating ct.sym intermittently
Summary: Initialize the module system model even in presence of missing/broken module-infos; BadClassFiles should not immediatelly abort compilation anymore, but should be handled as if the classfile did not exist.
Reviewed-by: jjg

8163989: Clarify ModuleElement spec
Reviewed-by: abuckley, jjg

8177311: Denied access when named module accesses unreferences package from the unnamed module
Summary: Ensure access to the unnamed module is allowed if the given module reads the unnamed module.
Reviewed-by: jjg

8176045: No compile error when a package is not declared
Summary: Fixing handling of otherwise empty files with package clauses and empty files without package clauses.
Reviewed-by: jjg

8175057: module-info on patch path should not produce an error
Summary: Allowing module-infos on patch paths during compilation.
Reviewed-by: jjg, ksrini

8173068: ElementUtils getPackageElement does not allow for an unnamed package
Summary: Removing special handling of unnamed packages in Elements.getPackageElement.
Reviewed-by: darcy, jjg, ksrini

8173117: Compilation significantly slower after JDK-8169197
Summary: Only using recovery search when an error is inevitable.
Reviewed-by: jjg, mcimadamore

8172809: Error compiling javafx modules after fix for JDK-8169197
Summary: Properly stripping broken requires from ModuleSymbols.
Reviewed-by: jjg, mcimadamore

8171098: NPE when --add-modules java.corba is used
Summary: Block annotations queue until enter is done, to avoid flushing annotations during module resolution.
Reviewed-by: jjg

8169197: Improve error reporting for compiling against unexported package
Summary: When a type cannot be found, look into other modules, search for possible viable types, and report them conveniently to the user.
Reviewed-by: mcimadamore, jjg

8170987: Module system implementation refresh (12/2016)
Reviewed-by: mcimadamore
Contributed-by: jonathan.gibbons@oracle.com, jan.lahoda@oracle.com, srikanth.adayapalam@oracle.com, alan.bateman@oracle.com, mandy.chung@oracle.com

8169069: Module system implementation refresh (11/2016)
Reviewed-by: mcimadamore, jjg, mchung, anazarov
Contributed-by: jonathan.gibbons@oracle.com, jan.lahoda@oracle.com, alan.bateman@oracle.com, mandy.chung@oracle.com, bhavesh.x.patel@oracle.com, andrey.x.nazarov@oracle.com

8167975: align javac --add-* modules options with launcher
Reviewed-by: jlahoda

8169074: Build is failing after JDK-8166538
Summary: Reverting d3dde3f775b8
Reviewed-by: darcy

8166538: Improve error reporting for compiling against unexported package
Summary: When a type cannot be found, look into other modules, search for possible viable types, and report them conveniently to the user.
Reviewed-by: mcimadamore, jjg

8167320: Trying to document only java.base causes a NPE in javac
Summary: Ensure ModuleSymbol.getDirectives completes the Symbol
Reviewed-by: ksrini, jjg

8152911: javac assertion error when compiling overlay sources
Summary: Avoid creating ModuleSymbols with unspecified name, to avoid conflicts with predefined ModuleSymbol for the java.base module.
Reviewed-by: jjg

8136930: Simplify use of module-system options by custom launchers
8160489: Multiple -Xpatch lines ignored by javac
8156998: javac should support new option -XinheritRuntimeEnvironment
Reviewed-by: jlahoda, ksrini

8155774: move code from ModuleTestBase to toolbox
Reviewed-by: ksrini, jlahoda

8154283: Check for clash between package and class not working when package in a different module
Summary: Looking for any visible package when checking for package-class clash
Reviewed-by: jjg

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