Fixing the SolidGrid print issue #77

Job	Run time
test (d2q9, float, same, true)	7m 40s
test (d2q9, float, same, false)	5m 47s
test (d2q9, float, half, true)	9m 22s
test (d2q9, float, half-shift, true)	7m 50s
test (d2q9, float, float, true)	7m 51s
test (d2q9, float, float, false)	5m 17s
test (d2q9, float, float-shift, true)	9m 30s
test (d2q9, float, float-shift, false)	7m 18s
test (d2q9, double, same, true)	7m 54s
test (d2q9, double, same, false)	5m 35s
test (d2q9, double, half, true)	7m 54s
test (d2q9, double, half-shift, true)	7m 50s
test (d2q9, double, float, true)	8m 1s
test (d2q9, double, float, false)	6m 25s
test (d2q9, double, float-shift, true)	9m 40s
test (d2q9, double, float-shift, false)	6m 1s
test (d2q9, double, double, true)	7m 42s
test (d2q9, double, double, false)	5m 12s
	2h 12m 49s

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