How to handle range queries for strings?

[kod-kristoff]

This concerns all range operators (GT,GTE,LT,LTE and RANGE?).

• gt|name|v gives 306 hits, all that contains a token greater than v
• gt|name|V gives 1981 hits, all that contains a token greater than V when lowercased (eg. all entries in places)
• gt|name.raw|v gives 130 hits, all that begins with a letter greater than v (if the first letter is in uppercase, only those starting with Å, Ä and Ö is returnes)
• gt|name.raw|V gives 285 hits, all that begins with a token greater than V including all entries starting with any lowercase letter.