patch: make quick search aware of case sensitivity (trying again)

Now, even if files in a panel are sorted case insensitively, quick search (alt-s) still is case sensitive. This is wrong, because if I don't care about case when sorting files, chances are I care about it even less when doing a quick search. Here's a patch that uses sensitive or insensitive sear

patch: make quick search aware of case sensitivity

Now, even if files in a panel are sorted case insensitively, quick search (alt-s) still is case sensitive. This is wrong, because if I don't care about case when sorting files, chances are I care about it even less when doing a quick search. Here's a patch that uses sensitive or insensitive sear