v6 of boolean folder patches

[Austin Clements]

Quoth David Bremner on Mar 11 at  8:01 pm:
> This supercedes the thread at 
> 
>      id:aa121361c0ad354f2c6d45b776299a0ba59b6844.1394400503.git.jani at nikula.org
> 
> Since the last  (amended) series to the list, we 
> 
>       renamed the database back to a generic name
>       regenerated the database
>       committed the right sha1
>       fixed some existing bugs with T090 triggered by the corpus reorganization.
> 
> At least Austin and Jani contributed pieces of this.

LGTM.  Tests pass.