Revert Unicode UCD 5.2 upgrade in 3.x.  It broke repr() for unicode objects, and gave failures in test_bigmem.  Revert 79062, 79065 and 79083.
diff --git a/Lib/test/test_unicodedata.py b/Lib/test/test_unicodedata.py
index 9777f73..46f0607 100644
--- a/Lib/test/test_unicodedata.py
+++ b/Lib/test/test_unicodedata.py
@@ -21,7 +21,7 @@
 class UnicodeMethodsTest(unittest.TestCase):
 
     # update this, if the database changes
-    expectedchecksum = '4504dffd035baea02c5b9de82bebc3d65e0e0baf'
+    expectedchecksum = '0b915116051f3ed029a98542c2b7df63c9646272'
 
     def test_method_checksum(self):
         h = hashlib.sha1()
@@ -80,7 +80,7 @@
 class UnicodeFunctionsTest(UnicodeDatabaseTest):
 
     # update this, if the database changes
-    expectedchecksum = '6ccf1b1a36460d2694f9b0b0f0324942fe70ede6'
+    expectedchecksum = 'd4169ccff998ebbd1ec007a0b3fbd66e5ccf0229'
 
     def test_function_checksum(self):
         data = []