8132468: docs: replace <tt> tags (obsolete in html5) for java.io, java.lang, java.math
Reviewed-by: lancea, dfuchs, smarks

8042377: BufferedWriter and FilteredOutputStream.close throw IAE if flush and close throw equal exceptions
Summary: Explcitly handle IOExceptions in FilteredOutputStream.close() instead of using try-with-resources approach.
Reviewed-by: chegar, alanb
Contributed-by: Peter Levart <peter.levart@gmail.com>

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