8076543: Add @modules as needed to the langtools tests
Reviewed-by: jjg, shurailine

8076420: Consolidate javac file handling in javac.file package
Reviewed-by: jlahoda

8049367: Modular Run-Time Images
Reviewed-by: jlahoda, ksrini
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, bradford.wetmore@oracle.com, chris.hegarty@oracle.com, erik.joelsson@oracle.com, james.laskey@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, sundararajan.athijegannathan@oracle.com

8024434: problem running javadoc tests in samevm mode on Windows
Reviewed-by: darcy

6493690: javadoc should have a javax.tools.Tool service provider installed in tools.jar
Reviewed-by: darcy