8162546: change hidden options -Xdebug to --debug, -XshouldStop to --should-stop, and -diags to --diags
Reviewed-by: mcimadamore

8160851: Remove old launcher module-related options
Reviewed-by: jjg, alanb

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

8153407: javac, fold debug options
Reviewed-by: mcimadamore, jjg

8155880: Fix langtools usage of the deprecated Class.newInstance method
Reviewed-by: mcimadamore

8155516: Suppress warnings from uses of deprecated Class.newInstance langtools
Reviewed-by: jjg

8149160: use StringJoiner in sjavac option handling
Summary: Concatenation of strings now uses StringJoiner.
Reviewed-by: alundblad, jjg
Contributed-by: cushon@google.com

8144226: Sjavac's handling of include/exclude patterns is buggy, redundant and inconsistent
Summary: Rewrote sjavac include/exclude pattern handling.
Reviewed-by: jlahoda

8135131: Enable thin server mode in Sjavac
Summary: State tracknig and incremental compilation disabled unless --state-dir is provided.
Reviewed-by: jlahoda

8080880: some docs cleanup for langtools
Summary: minor cleanup for docs
Reviewed-by: jjg

8054717: SJavac should track changes in the public apis of classpath classes!
Summary: Added functionality for tracking changes in public APIs of classpath classes.
Reviewed-by: jlahoda, erikj

8071966: Bootcycle images build fails on Windows32/64
Summary: Added drive letter normalization in option decoding.
Reviewed-by: jlahoda

8042088: Sjavac spawns external processes in a unnecessarily complex and platform dependent way
Summary: Refactoring of the sjavac background fork code.
Reviewed-by: jfranck, ohrstrom

Merge

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