8178984: Unnecessary angle brackets in the Line2D::intersectsLine() javadoc.
Reviewed-by: prr, jdv

8178457: Remove link to 2D guide from Line2D javadoc
Reviewed-by: flar

8138838: docs cleanup for java.desktop
Summary: docs cleanup for java.desktop
Reviewed-by: serb

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