simplify #wizidentify

simplify #wizidentify

Get rid of bold/non-bold distinction in #wizidentify inventory menu
by only showing items which aren't yet fully identified instead of
full inventory with bold for unID'd.  Support for bold text might
be lacking.

I was considering this even before the report that X11 menus ignore
attribute.  The "_ - (use ^I for all)" menu entry is still present,
but it could be discarded in favor of '.' to pick everything via
ordinary menu selection.