Make sort-test.py Python 3 compatible

Python 2 is still supported.

src/test/locale/sort-test.py

@@ -3,7 +3,7 @@
 import sys, string, locale
 locale.setlocale(locale.LC_ALL, "")
 
-if len(sys.argv) <> 2:
+if len(sys.argv) != 2:
    sys.stderr.write("Usage: sort.py filename\n")
    sys.exit(1)
 
@@ -14,5 +14,5 @@ infile.close()
 for i in range(0, len(list)):
    list[i] = list[i][:-1] # chop!
 
-list.sort(locale.strcoll)
-print string.join(list, '\n')
+list.sort(key=locale.strxfrm)
+print('\n'.join(list))