Basic code structure to allow for two new powerups
Basic airflower capabilities added: higher jumps and faster max run speed
Code structure for basic earthflower ability: illumination in the dark
New powerups added to cheat menu
Graphics for powerups: airflower and earthflower
Completed airflower powerup abilities.
Airflower is meant to be a powerup geared to speed runs and sky levels.  It makes Tux light on his feet, with a passive ability of faster max run speed and greater attainable jump height.
In addition, airflower has an active ability which allows Tux to glide for a short period of time after jumping.  The duration that Tux can glide increases with additional airflower powerups.  To glide, the user only needs to hold the jump key while falling.  Every time the player jumps they may glide for a set amount of time which is reset upon Tux touching the ground.
Tux sprites still need to be done, and it may be worth considering replacing the backflip with a launching jump when Tux has this powerup.  Of course tweaks to the values used will also likely be needed.
Removed unused graphic: effects/light_red.png
New powerups added to worldmap cheat menu
Bouncing on enemies and trampolines also gets a hight bonus from airflower
Butt-jump stops gliding
Removed some holes from standing Tux graphics
Tweak icecrusher draw layers to avoid objects (such as coins) from appearing inside the eyes.
Also removed excess debug line.