ncd: ncd.c: add option for stderr logger, and default to it instead of stdout
ncd: ncd.c: add option for stderr logger, and default to it instead of stdout

fffw/badvpn,walterDurin/badvpn,bakhet/badvpn,fragmede/badvpn,nuwaf/badvpn,kaliii/badvpn,atavism/badvpn,adelshokhy112/badvpn,adelshokhy112/badvpn,adelshokhy112/badvpn,Qnex93/badvpn,bakhet/badvpn,bawaaaaah/badvpn,bakhet/badvpn,fffw/badvpn,ambrop72/badvpn-googlecode-export,walterDurin/badvpn,bawaaaaah/badvpn,Rastii/badvpn,kaliii/badvpn,walterDurin/badvpn,nuwaf/badvpn,atavism/badvpn,walterDurin/badvpn,henryhwang/badvpn,henryhwang/badvpn,fffw/badvpn,nuwaf/badvpn,Qnex93/badvpn,Rastii/badvpn,ambrop72/badvpn-googlecode-export,kaliii/badvpn,nuwaf/badvpn,arevindh/badvpn,Rastii/badvpn,ambrop72/badvpn-googlecode-export,henryhwang/badvpn,Qnex93/badvpn,fragmede/badvpn,arevindh/badvpn,atavism/badvpn,Rastii/badvpn,bawaaaaah/badvpn,atavism/badvpn,fragmede/badvpn,bakhet/badvpn,bawaaaaah/badvpn,Rastii/badvpn,walterDurin/badvpn,bawaaaaah/badvpn,fragmede/badvpn,nuwaf/badvpn,arevindh/badvpn,arevindh/badvpn,henryhwang/badvpn,adelshokhy112/badvpn,adelshokhy112/badvpn,ambrop72/badvpn-googlecode-export,ambrop72/badvpn-googlecode-export,kaliii/badvpn,atavism/badvpn,kaliii/badvpn,fragmede/badvpn,Qnex93/badvpn,henryhwang/badvpn,bakhet/badvpn,fffw/badvpn,arevindh/badvpn,Qnex93/badvpn,fffw/badvpn