travis: Re-add libglew dependency
Needed by engine in C port.
sky = 50, 40, 131
border = 0, 128, 0
water-top = 255, 98, 0
water-bottom = 255, 68, 0
water-opacity = 125
music = oriental.ogg
clouds = 20
object = Orange1, 1, 50, 84, 15, 3, 1, 8, 2, 90, 73
object = Orange2, 1, 50, 84, 15, 3, 1, 8, 2, 90, 73
object = Watermelon, 1, 87, 272, 77, 10, 1, 21, 2, 242, 219
object = Banana1, 1, 152, 191, 37, 24, 1, 2, 1, 163, 174
object = Banana2, 1, 1, 190, 37, 24, 1, 22, 0, 163, 174
flakes = 20, 3, 0, 100, 260