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/Tools/unicode/makeunicodedata.py b/Tools/unicode/makeunicodedata.py
index 040ac89..454e435 100644
--- a/Tools/unicode/makeunicodedata.py
+++ b/Tools/unicode/makeunicodedata.py
@@ -31,7 +31,7 @@
VERSION = "2.6"
# The Unicode Database
-UNIDATA_VERSION = "5.2.0"
+UNIDATA_VERSION = "5.1.0"
UNICODE_DATA = "UnicodeData%s.txt"
COMPOSITION_EXCLUSIONS = "CompositionExclusions%s.txt"
EASTASIAN_WIDTH = "EastAsianWidth%s.txt"