8171075: Inet4AddressImpl: Remove duplicate and (no longer used ?) native coding for BSD
Reviewed-by: goetz

8167481: cleanup of headers and includes for native libnet
Reviewed-by: chegar

8167295: Further cleanup to the native parts of libnet/libnio
Reviewed-by: chegar

8080819: Inet4AddressImpl regression caused by JDK-7180557
Reviewed-by: michaelm
Contributed-by: brian.toal@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