8168772: Convert javadoc generation to build-infra standards
Reviewed-by: erikj

8150736: Excessive disk space used by build system
Reviewed-by: ihse

8166965: Some small java build tools are still running with big JVM configuration
Reviewed-by: ihse

8164301: jib should provide a JDK for running jtreg with
Reviewed-by: tbell

8157028: Add make target for running gtest tests
Reviewed-by: erikj, jwilhelm

8154313: Generated javadoc scattered all over the place
Summary: Added new top level target zip-docs which scans all generated javadocs and prepare zip-archive in way understandable to most IDEs
Reviewed-by: erikj
Contributed-by: Jiri Vanek <jvanek@redhat.com>

8142968: Module System implementation
Summary: Initial integration of JEP 200, JEP 260, JEP 261, and JEP 282
Reviewed-by: alanb, mchung, tbell
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, erik.joelsson@oracle.com, chris.hegarty@oracle.com, christian.tornqvist@oracle.com, harold.seigel@oracle.com, igor.ignatyev@oracle.com, james.laskey@oracle.com, jean-francois.denise@oracle.com, sundararajan.athijegannathan@oracle.com

8146403: Windows build can be faster
Reviewed-by: ihse

8139272: Add configure variable to set concurrency for jtreg tests
Reviewed-by: erikj, ihse

8141261: Clean up building of demos
Reviewed-by: erikj, tbell

8140282: Remove test directories on clean-test-*
Reviewed-by: erikj

8136421: JEP 243: Java-Level JVM Compiler Interface
Reviewed-by: ihse, alanb, roland, coleenp, iveresov, kvn, kbarrett

8081814: Modularize the deploy build
Reviewed-by: ihse, ddehaven

8073634: Improve clean targets
Reviewed-by: ihse

8076060: Improve make bootstrap process
Reviewed-by: erikj