Summary: Cleanup of javadoc -Xlint errors
Reviewed-by: lancea, mduigou, darcy, mullan, mchung

Reviewed-by: weijun, xuelei

Reviewed-by: darcy, mullan

Summary: Convert to {@code ...} tags. convert package.html to package-info.java.
Reviewed-by: darcy

Reviewed-by: mchung

Reviewed-by: jrose, alanb, twisti

Reviewed-by: acorn, hawtin

Reviewed-by: ahgross, jdn, vinnie

Reviewed-by: vinnie, ahgross

Reviewed-by: xuelei, mullan
Contributed-by: alexandre.boulgakov@oracle.com

Reviewed-by: darcy, weijun

Reviewed-by: alanb