Correct "blocks" assignment in Tetrinimo constructor
Correct "blocks" assignment in Tetrinimo constructor

Tetrinimo constructor previously linked each block's coordinates to the "TETRINIMO_SHAPES" constant rather than creating new values; thus the constant would be modified whenever the tetrinimo's coordinates changed.

RoyTuesday/tetrelementis,peternatewood/tetrelementis,RoyTuesday/tetrelementis,peternatewood/tetrelementis