callbacks: new callbacks for gssapi
callbacks: new callbacks for gssapi

Reviewed-by: Andreas Schneider <5be00ddc76278cf6077f5047ca3384a88460c671@cryptomilk.org>

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