init from upstream 2.35

Signed-off-by: Chunmei Xu <xuchunmei@linux.alibaba.com>

parse-SUPPORTED.py

@@ -0,0 +1,40 @@
+#!/usr/bin/python3
+#
+# This script turns localedata/SUPPORTED (whose path is passed as the
+# first argument) into a normalized list of LANGUAGE "_" REGION pairs.
+# (If there is no REGION defined, only LANGUAGE is used.)  The list
+# is written to standard output, with one element per line.
+
+import sys
+
+supported, = sys.argv[1:]
+
+# Pairs seen so far.  Used to suppress duplicates.
+seen = set()
+with open(supported) as inp:
+    for line in inp:
+        if line.startswith("#") or line == "SUPPORTED-LOCALES=\\\n":
+            # Comment or prefix.
+            continue
+        if not line.endswith(" \\\n"):
+            raise IOError("line without continuation: " + repr(line))
+        try:
+            slash = line.index("/")
+        except ValueError:
+            raise IOError("line without slash: " + repr(line))
+        spec = line[:slash]
+        for separator in ".@":
+            try:
+                # Strip charset, variant specifiers.
+                spec = spec[:spec.index(separator)]
+            except ValueError:
+                pass
+        seen.add(spec)
+
+# The C locale does not correspond to a language.
+seen.remove("C")
+
+# The glibc source file is not sorted.
+for spec in sorted(seen):
+    print(spec)
+print() # The Lua generator produces a trailing newline.