Add struct sctp_initmsg. Reported by Randell Jesup.
Add struct sctp_initmsg. Reported by Randell Jesup.

liamstask/usrsctp,sukinull/usrsctp,JlnWntr/usrsctp,faithfracture/usrsctp,faithfracture/usrsctp,ossy-szeged/usrsctp,faithfracture/usrsctp,saghul/usrsctp,sctplab/usrsctp,sctplab/usrsctp,sctplab/usrsctp,weinrank/usrsctp,sukinull/usrsctp,bebo/usrsctp,CoolmanCZ/usrsctp,bebo/usrsctp,CoolmanCZ/usrsctp,ossy-szeged/usrsctp,liamstask/usrsctp,weinrank/usrsctp,CoolmanCZ/usrsctp,weinrank/usrsctp,CoolmanCZ/usrsctp,JlnWntr/usrsctp,saghul/usrsctp,JlnWntr/usrsctp