Fixed various errors.

- BoundCameraExample.java: Line 220 gave the error "Type mismatch:
cannot convert from void to AnimatedSprite." Turned the offending line
into two separate lines.
- HullAlgorithmExample.java: Line 11 gave the error "The import
org.andengine.entity.primitive.vbo.DrawMode cannot be resolved." Needed
to drop the 'vbo' portin of the path.
- SplitScreenExample.java: Line 179 same error as
BoundCameraExample.java.
- TextBreakExample.java: Line 106 gave the error "Constructor
undefined." The parameters were in the wrong order.