Fix DotTester.test_good in debugmode, make *allocempty accept non finite value

theano/sandbox/cuda/basic_ops.py

@@ -3535,6 +3535,9 @@ class GpuAllocEmpty(GpuOp):
     def make_node(self, *shape):
         shape, output = self.validate_shape(shape)
         output.tag.values_eq_approx = tensor.type.values_eq_approx_always_true
+        # The outut can contain nan/inf.  output.type is a new
+        # instance, so we can do this only for that variable.
+        output.type.filter_checks_isfinite = False
         return Apply(self, shape, [output])
 
     def perform(self, node, inputs, out_):

theano/sandbox/gpuarray/basic_ops.py

@@ -713,6 +713,8 @@ class GpuAllocEmpty(HideC, Alloc):
         sh, bcast = self.validate_shape(shape)
         output = GpuArrayType(dtype=self.dtype, broadcastable=bcast)()
         output.tag.values_eq_approx = tensor.type.values_eq_approx_always_true
+        # The outut can contain nan/inf.
+        output.type.filter_checks_isfinite = False
         return Apply(self, sh, [output])
 
     def perform(self, node, inputs, out_):

theano/tensor/basic.py

@@ -5709,6 +5709,9 @@ class AllocEmpty(gof.Op):
     def make_node(self, *shape):
         shape, output = self.validate_shape(shape)
         output.tag.values_eq_approx = values_eq_approx_always_true
+        # The outut can contain nan/inf.  output.type is a new
+        # instance, so we can do this only for that variable.
+        output.type.filter_checks_isfinite = False
         return Apply(self, shape, [output])
 
     def perform(self, node, inputs, out_):