[Vimpulse] /-search incremental highlighting is always case insensitive

Hi, I really like the new isearch-style /-search, but I notice the highlighting as I'm typing a search term, as well as the first search selection, are always case insensitive. So, given this text: ASDF asDf asdf If viper-case-fold-search is nil and I search for "asdf", all of the variants of asdf highlight, and after pressing enter the cursor moves to ASDF, but subsequent presses of "n" will only go to asdf (even though the other variants stay highlighted as if they are also matched). As a side-note, it'd be nice if the old viper trick of typing "/" twice quickly to change case sensitivity still worked -- but since this isn't a Vim thing, I can understand why we didn't bother keeping it around.