• The update provides options on par with original lib source, except share lib part.
• change static lib to be shared lib by default, which is required in my another ports.
• about 8.4 release broken: the issue will be resolved by adding one include file. There is one line missing in 8.4 tcp.h file.

PR: 193131
Submitted by: Jingfeng Yan (maintainer)
MFH: 2014q3