Use __class__.__name__ for boolops loopup

cmpops, binops, and unops already used this technique, but boolops did not.
The reason this technique is preferred to using __class__ for the lookup is that when working with e.g. gast (a cross version compatible AST) the exact type match required by the __class__ lookup fails (since gast.And != ast.And), whereas the name based lookup works fine.

Author: dbieber

lib/astunparse/unparser.py

@@ -620,10 +620,10 @@ def _Compare(self, t):
             self.dispatch(e)
         self.write(")")
 
-    boolops = {ast.And: 'and', ast.Or: 'or'}
+    boolops = {'And': 'and', 'Or': 'or'}
     def _BoolOp(self, t):
         self.write("(")
-        s = " %s " % self.boolops[t.op.__class__]
+        s = " %s " % self.boolops[t.op.__class__.__name__]
         interleave(lambda: self.write(s), self.dispatch, t.values)
         self.write(")")