Merge tag '0.6' into develop

Spacial Pyramid Matching as centroid similarity measure.
Java packaging

It's time to have a cleaner access, since I'm going to import the jar in
the UL-ERL project.
Jar compilation (`ant jar` lol)
Switching to int[] images for compatibility with Jan's code
Added version tag and current branch/id to jar name
BMPLoader constructor to use in torcs driver
Switching from JAFFE to torcs images

I'm getting them straight where I save them from torcs.
Added script to delete images from short runs

It's still a first sketch.
- Make it ask for confirmation of main directory before running
- Take minimum dir size from input
- Change into keeping the `n` largest dirs
Fixed `ant jar` to work with git-flow directory-like branch names
New `scripts` folder
Pull images from different runs/individuals
Run the algorithm on the run's images
Refresh jars at each new compilation
New script to clean, pull and compress last torcs images
Idea on a new UL method (check literature, likely already done)
Merge branch 'feature/torcs' into develop
Merge branch 'release/0.7'