vim: show line width in statusline
vim: show line width in statusline

It's long bothered me that I show line/total_lines but not
column/total_columns, so now we do.

Probably don't need % as well though. It's getting pretty long now. I'll
try cutting it out.

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent