LibGL Simple cube test modification.

LibGL Simple cube test modification.

Added display lists initialization and calls as well as a scaling operation, making the cube shrink then grow.

Change-Id: I861e35443d9b8bda86f3ca6b64ddad40916b221e
Reviewed-on: https://swiftshader-review.googlesource.com/2270
Tested-by: Maxime Grégoire <mgregoire@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>