gnome-terminal detection to fix $TERM

detect_libvte_terminal.sh

# Set $TERM for libvte terminals that set $TERM wrong (like gnome-terminal) 
{ 
  [ "_$TERM" = "_xterm" ] && type ldd && type grep && type tput && [ -L "/proc/$PPID/exe" ] && { 
    if ldd /proc/$PPID/exe | grep libvte; then 
      if [ "`tput -Tgnome-256color colors`" = "256" ]; then 
        TERM=gnome-256color 
      elif [ "`tput -Txterm-256color colors`" = "256" ]; then 
        TERM=xterm-256color 
      elif tput -T gnome; then 
        TERM=gnome 
      fi 
    fi 
  } 
} >/dev/null 2>/dev/null