Optimized lazy() by removing use of @total_ordering.

@total_ordering is slow. Using the following micro-benchmark
(resultclasses intentionally omitted to narrow the scope):

    import cProfile
    from django.utils.functional import lazy
    def identity(x): return x
    cProfile.run("for i in range(10000): str(lazy(identity)(1))")

Before:

    380003 function calls in 0.304 seconds

    ncalls  tottime  percall  cumtime  percall filename:lineno(function)
         1    0.016    0.016    0.304    0.304 <string>:1(<module>)
     10000    0.002    0.000    0.002    0.000 bench.py:5(double)
     10000    0.005    0.000    0.006    0.000 functional.py:100(__cast)
     10000    0.007    0.000    0.013    0.000 functional.py:106(__str__)
     10000    0.005    0.000    0.017    0.000 functional.py:140(__wrapper__)
     10000    0.020    0.000    0.258    0.000 functional.py:60(lazy)
     10000    0.039    0.000    0.039    0.000 functional.py:68(__proxy__)
     10000    0.010    0.000    0.012    0.000 functional.py:77(__init__)
     10000    0.002    0.000    0.002    0.000 functional.py:84(__prepare_class__)
     10000    0.025    0.000    0.075    0.000 functools.py:186(total_ordering)
     10000    0.015    0.000    0.028    0.000 functools.py:189(<setcomp>)
     10000    0.024    0.000    0.044    0.000 functools.py:37(update_wrapper)
     10000    0.005    0.000    0.005    0.000 functools.py:67(wraps)
     10000    0.074    0.000    0.114    0.000 {built-in method builtins.__build_class__}
         1    0.000    0.000    0.304    0.304 {built-in method builtins.exec}
    150000    0.023    0.000    0.023    0.000 {built-in method builtins.getattr}
     10000    0.004    0.000    0.004    0.000 {built-in method builtins.max}
     80000    0.025    0.000    0.025    0.000 {built-in method builtins.setattr}
         1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Profiler' objects}
     10000    0.003    0.000    0.003    0.000 {method 'update' of 'dict' objects}

After:

    240003 function calls in 0.231 seconds

    ncalls  tottime  percall  cumtime  percall filename:lineno(function)
         1    0.016    0.016    0.231    0.231 <string>:1(<module>)
     10000    0.002    0.000    0.002    0.000 bench.py:5(double)
     10000    0.006    0.000    0.012    0.000 functional.py:105(__str__)
     10000    0.005    0.000    0.017    0.000 functional.py:159(__wrapper__)
     10000    0.015    0.000    0.186    0.000 functional.py:60(lazy)
     10000    0.022    0.000    0.022    0.000 functional.py:68(__proxy__)
     10000    0.010    0.000    0.012    0.000 functional.py:76(__init__)
     10000    0.002    0.000    0.002    0.000 functional.py:83(__prepare_class__)
     10000    0.004    0.000    0.006    0.000 functional.py:99(__cast)
     10000    0.023    0.000    0.043    0.000 functools.py:37(update_wrapper)
     10000    0.004    0.000    0.004    0.000 functools.py:67(wraps)
     10000    0.102    0.000    0.124    0.000 {built-in method builtins.__build_class__}
         1    0.000    0.000    0.231    0.231 {built-in method builtins.exec}
     70000    0.011    0.000    0.011    0.000 {built-in method builtins.getattr}
     50000    0.007    0.000    0.007    0.000 {built-in method builtins.setattr}
         1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Profiler' objects}
     10000    0.003    0.000    0.003    0.000 {method 'update' of 'dict' objects}

django/utils/functional.py

@@ -1,7 +1,7 @@
 import copy
 import itertools
 import operator
-from functools import total_ordering, wraps
+from functools import wraps
 
 
 class cached_property:
@@ -82,7 +82,6 @@ def lazy(func, *resultclasses):
     function is evaluated on every access.
     """
 
-    @total_ordering
     class __proxy__(Promise):
         """
         Encapsulate a function call and act as a proxy for methods that are
@@ -144,11 +143,31 @@ def lazy(func, *resultclasses):
                 other = other.__cast()
             return self.__cast() == other
 
+        def __ne__(self, other):
+            if isinstance(other, Promise):
+                other = other.__cast()
+            return self.__cast() != other
+
         def __lt__(self, other):
             if isinstance(other, Promise):
                 other = other.__cast()
             return self.__cast() < other
 
+        def __le__(self, other):
+            if isinstance(other, Promise):
+                other = other.__cast()
+            return self.__cast() <= other
+
+        def __gt__(self, other):
+            if isinstance(other, Promise):
+                other = other.__cast()
+            return self.__cast() > other
+
+        def __ge__(self, other):
+            if isinstance(other, Promise):
+                other = other.__cast()
+            return self.__cast() >= other
+
         def __hash__(self):
             return hash(self.__cast())