Update colorama from upstream to 5a3100113a3a.

third_party/colorama/ansi.py

+# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
 '''
 This module generates ANSI character codes to printing colors to terminals.
 See: http://en.wikipedia.org/wiki/ANSI_escape_code
 '''
 
 CSI = '\033['
 
 def code_to_chars(code):
     return CSI + str(code) + 'm'
 
 class AnsiCodes(object):
-    def __init__(self):
-        for name in dir(self):
-            if not name.startswith('_') and name.upper() == name:
-                value = getattr(self, name)
+    def __init__(self, codes):
+        for name in dir(codes):
+            if not name.startswith('_'):
+                value = getattr(codes, name)
                 setattr(self, name, code_to_chars(value))
 
-
-class AnsiFore(AnsiCodes):
+class AnsiFore:
     BLACK   = 30
     RED     = 31
     GREEN   = 32
     YELLOW  = 33
     BLUE    = 34
     MAGENTA = 35
     CYAN    = 36
     WHITE   = 37
     RESET   = 39
 
-class AnsiBack(AnsiCodes):
+class AnsiBack:
     BLACK   = 40
     RED     = 41
     GREEN   = 42
     YELLOW  = 43
     BLUE    = 44
     MAGENTA = 45
     CYAN    = 46
     WHITE   = 47
     RESET   = 49
 
-class AnsiStyle(AnsiCodes):
+class AnsiStyle:
     BRIGHT    = 1
     DIM       = 2
     NORMAL    = 22
     RESET_ALL = 0
 
+Fore = AnsiCodes( AnsiFore )
+Back = AnsiCodes( AnsiBack )
+Style = AnsiCodes( AnsiStyle )
 
-# Constructing the object converts the code into the equivalent ANSI escape
-# string.
-Fore = AnsiFore()
-Back = AnsiBack()
-Style = AnsiStyle()