Netty4 update with client local address binding feature

[JChrist]

Hello,
I have created a PR (#22) updating the netty 4 branch with latest netty, also pulling in changes from upstream repository (fizzed) that were not brought in this one.
Also, it contains a new feature for an smpp client based on cloudhopper to be able to bind to a specific local address. This is required when running on a server with multiple network addresses and when only a specific one of them is whitelisted in the SMPP server side (and it isn't the one picked up by default).

Are there any plans to check this out, provide feedback and possibly merge it in?

[vetss]

Hello @JChrist

yes, we are going to check your updates, thanks for summarizing of missed commits for netty-4 branch.
We need some time for finish the work because your update rather heavy, sorry for that.