#25 Warn about octal literals.

[Simon Brunning]

It would be useful if PyChecker warned you when you
specify an octal literal and where the value would
differ from what you might expect if you didn't
*realise* that you were specifying an octal literal.

x = 04 # This doesn't need a warning: 04 == 4
#x = 09 # This doesn't need a warning: it will fail to
compile
x= 012 # This *does* need a warning: 012 == 10

[Toyotomi Hideyoshi]

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user_id=559878

Good one..