Haywire: Implemented a first version of the "crazy bomb".

Sprites and bode are based on Mr. Bomb, of course. Haywire behaves like Mr.
Bomb until jumped upon. If jumped upon, he will run around (walk with twice the
speed) for five seconds, then explode. While running around Haywire will
iterate through a number of different colors.

When jumped upon - even when already ticking - Haywire is stunned for half a
second. This does not interrupt the explosion timer, though.

SVN-Revision: 6443