Better cache-searching by name

```
Current implementation of name-matching (when searching for caches) is flanky. 
Most developers would call it with "*" + user's query + "*" anyway.

Add a new "name_matching" parameter with "relaxed" option to choose from.
```

Original issue reported on code.google.com by `rygielski` on 9 Jun 2012 at 2:23
