vimrc: fix ttymouse with xterm-keys on old vim; prefer sgr always
vimrc: fix ttymouse with xterm-keys on old vim; prefer sgr always

blueyed/dotfiles,scorpiovn/dotfiles,blueyed/dotfiles,scorpiovn/dotfiles,scorpiovn/dotfiles,scorpiovn/dotfiles,blueyed/dotfiles,scorpiovn/dotfiles,blueyed/dotfiles,blueyed/dotfiles