brogue 1.7.4

Directory hierarchy changed a bit.  Original tarball extracts as 'brogue-linux-1.7.3/brogue-1.7.3/' and the new one extracts as 'brogue-1.7.4/'.  The tarball itself also changed from '.tar.gz' to '.tbz2' .

Closes #133.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>