Handle EINTR and EAGAIN in babel_send.
Handle EINTR and EAGAIN in babel_send.

Drooids/babeld,jech/babeld,wlanslovenija/babeld,boutier/babeld,jech/babeld,dtaht/babeld-shortrtt-metrics,Gwendocg/babeldToS,Gwendocg/babeldToS,tcatm/babeld,wlanslovenija/babeld,woniullb/babeld,sudomesh/babeld