Fixed subtle bug that caused arrays of dtype elements to have the wrong

shape.  [dtype(np.float64), dtype(np.float64)] should have shape (2,) but
had shape (2,0) and the wrong dtype of the array. This broke several tests
in the scipy.stats module.

numpy/NumpyDotNet/NpyArray.cs

@@ -579,7 +579,7 @@ internal static dtype FindArrayType(Object src, dtype minitype, int max = NpyDef
                 }
             }
             // TODO: PyInstance_Check?
-            if (src is IEnumerable<object>) {
+            if (src is IEnumerable<object> && !(src is dtype)) {
                 // TODO: This does not work for user-defined Python sequences
                 int l;
                 try {
@@ -688,7 +688,7 @@ private static int DiscoverDepth(Object src, int max,
                 }
             }
 
-            if (src is IEnumerable<object>) {
+            if (src is IEnumerable<object> && !(src is dtype)) {
                 IEnumerable<object> seq = (IEnumerable<object>)src;
                 object first;
                 try {

numpy/NumpyDotNet/ufunc.cs

@@ -205,8 +205,6 @@ public string __name__ {
             }
         }
 
-        // TODO: Implement 'identity'
-
         public string signature() {
             CheckValid();
             IntPtr strPtr = Marshal.ReadIntPtr(core, NpyCoreApi.UFuncOffsets.off_core_signature);