misc: ipaddr.h: add address formatting functions
misc: ipaddr.h: add address formatting functions

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