Don't include kernel provided information is the
User Initiated ABORT cause, since the user can
provide this.
While there: Fix a bug where malformed ABORTs
are sent when using SCTP_ABORT|SCTP_SENDALL in
a send() call.


git-svn-id: http://sctp-refimpl.googlecode.com/svn/trunk@8416 9df1edf5-d72c-5b5f-11c0-5f5209eb73f7