Making this license just apply to the software.

See next commit...
Splitting out the LICENSE into Icons and Software

(prev commit to get the rename stuff right)
BSD 2-Clause doesn't make much sense for non-software stuff like
icons... Kristina is releasing the icons under CC-BY-3.0.
Importing Icons

Importing Kristina's icons into the repository.  See LICENSE and
LICENSE-Icons for the license information.