Update checksum test for Unicode 13; extend test to all of Unicode

This commit combines the following two upstream patches:

python/cpython#18913
commit c77aa2d60b420747886f4258cf159bdbb7354100
Author: Benjamin Peterson <benjamin@python.org>
Date:   Tue Mar 10 21:18:33 2020 -0700

    bpo-39926: Update unicodedata checksum tests for Unicode 13.0 update. (GH-18913)

    I forget these tests required the cpu resource.

python/cpython#15125
commit 6954be815a16fad11d1d66be576865bbbeb2b97d
Author: Greg Price <gnprice@gmail.com>
Date:   Thu Sep 12 02:25:25 2019 -0700

    closes bpo-37758: Extend unicodedata checksum tests to cover all of Unicode. (GH-15125)

    Unicode has grown since Python first gained support for it,
    when Unicode itself was still rather new.

    This pair of test cases was added in commit 6a20ee7de back in 2000,
    and they haven't needed to change much since then.  But do change
    them to look beyond the Basic Multilingual Plane (range(0x10000))
    and cover all 17 planes of Unicode's final form.

    This adds about 5 seconds to the test suite's runtime.  Mark the
    tests as CPU-using accordingly.

Author: anthrotype

tests/test_unicodedata2.py

@@ -11,6 +11,7 @@
 import sys
 import unittest
 import hashlib
+from test.support import requires_resource
 
 encoding = 'utf-8'
 errors = 'surrogatepass'
@@ -36,12 +37,14 @@ class UnicodeFunctionsTest(UnicodeDatabaseTest):
 
     # Update this if the database changes. Make sure to do a full rebuild
     # (e.g. 'make distclean && make') to get the correct checksum.
-    expectedchecksum = 'c44a49ca7c5cb6441640fe174ede604b45028652'
+    expectedchecksum = 'd1e37a2854df60ac607b47b51189b9bf1b54bfdb'
+
+    @requires_resource('cpu')
     def test_function_checksum(self):
         data = []
         h = hashlib.sha1()
 
-        for i in range(0x10000):
+        for i in range(sys.maxunicode + 1):
             char = chr(i)
             data = [
                 # Properties