message: Handle all unknown global messages.
message: Handle all unknown global messages.

Reply to unknown global messages as required by the RFC. Therefore
keepalive@openssh.com style messages should get treated in a sane way.

taikoo/libssh,nviennot/libssh,jt1/honeypot-libssh,jt1/honeypot-libssh,bigcat26/libssh-mod,wangshawn/libssh,jt1/honeypot-libssh,mwgoldsmith/libssh,robxu9/libssh,DouglasHeriot/libssh,sebadoom/libssh,elastichosts/libssh,mwgoldsmith/libssh,taikoo/libssh,kedazo/libssh,sebadoom/libssh,nviennot/libssh,elastichosts/libssh,Distrotech/libssh,sebadoom/libssh,Distrotech/libssh,Distrotech/libssh,Distrotech/libssh,nviennot/libssh,pouete/libssh,kedazo/libssh,jt1/honeypot-libssh,kedazo/libssh,wangshawn/libssh,pouete/libssh,robxu9/libssh,nviennot/libssh,kedazo/libssh,sebadoom/libssh,mwgoldsmith/ssh,wangshawn/libssh,elastichosts/libssh,DouglasHeriot/libssh,mwgoldsmith/libssh,mwgoldsmith/ssh,pouete/libssh,robxu9/libssh,taikoo/libssh,taikoo/libssh,mwgoldsmith/ssh,DouglasHeriot/libssh,wangshawn/libssh,bigcat26/libssh-mod,pouete/libssh,DouglasHeriot/libssh,bigcat26/libssh-mod,mwgoldsmith/ssh,mwgoldsmith/libssh,bigcat26/libssh-mod,robxu9/libssh