travis: Re-add libglew dependency
Needed by engine in C port.
sky = 92, 151, 253
border = 52, 38, 23
water-top = $41, $23, $12
water-bottom = $33, $21, $9
water-opacity = $FF
music = Compost.ogg
clouds = 16
object = Eggshell1, 3, 48, 92, 78, 37, 1, 0, 0, 125, 47
object = Eggshell2, 3, 40, 65, 80, 50, 1, 0, 0, 120, 50
object = Onion1, 3, 0, 65, 90, 30, 1, 0, 0, 75, 50
object = Onion2, 3, 35, 80, 75, 40, 2, 0, 0, 30, 50, 0, 36, 30, 50
object = Cucumber1, 3, 0, 100, 75, 40, 1, 80, 0, 89, 95
object = Cucumber2, 3, 0, 70, 125, 45, 1, 0, 0, 70, 55
object = Carrot1, 3, 65, 0, 40, 30, 1, 0, 100, 100, 100
object = Carrot2, 3, 0, 30, 40, 35, 1, 80, 65, 100, 100
spray = Cucumber3, 1
spray = Cucumber4, 1
spray = Carrot3, 1
spray = Carrot4, 1
flakes = 100, 1, 130, 0, 5