Make tensor/tests/test_basic.py tests run in floatX.

One test was forced to float64, as otherwise the test crash. I make an issue to fix it.

Make tensor/tests/test_basic.py tests run in floatX.
a4d57432 · Frederic Bastien · 9be8ca6a · a4d57432
--- a/theano/tensor/tests/test_basic.py
+++ b/theano/tensor/tests/test_basic.py