[BGP] MRAI connection-based implementation review

[Mattia Milani]

Hello to everyone, in the past months I have implemented the MRAI timer 
in the BGP protocol and I would like to ask you guys how can I submit 
this code in order to receive a review form someone more expert than me?

My implementation is on a connection-based approach timer and now I'm 
working on the destination based timer.

I have also inserted some new keywords to control this timer from the 
configuration file.

I'm not sure my code is 100% correct, but from the tests that I have 
done it works.

Thanks for the help,
Mattia