8177789: fix collections framework links to point to java.util package doc
Reviewed-by: bchristi, martin

8177653: clarify restrictions on Iterator.forEachRemaining
Reviewed-by: martin

8168745: Iterator.forEachRemaining vs. Iterator.remove
Reviewed-by: martin, smarks

8072726: add adapter to convert Enumeration to Iterator
Reviewed-by: redestad, forax, chegar, dfuchs, psandoz, rriggs, briangoetz

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