#5 AES: fix for python 2.2

[Anonymous]

in module aes.py, I had to modify 4 lines from:
if str(type(data)) != "<type 'string'>":
to:
if str(type(data)) != "<type 'str'>":

to get the module working properly.

[Marco Beri]

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Much better to use:
if str(type(data)) != str(type("")):