ENH: select column/coordinates/multiple with start/stop/selection
select_as_multiple/column/coordinate and remove behaves strange on combinations of where clauses and start/stop keyword arguments so I started fixing this.

I changed select_as_multiple to select coordinates inside the TableIterator, so it will work on large tables. Moreover select_as_multiple always throws a KeyError when either a key or the selector is not available in the file.

Closes #4835.
