In pyport.h, __attribute__ is defined away on compilers 
that aren't known to support it.

In a situation where python is being embedded, this is 
not very friendly behavior.

Some compilers e.g. CodeWarrior support __attribute__, 
but not with the options that Python uses "(format(printf, 
m, n))".

A better solution would be to define a macro e.g. 
PyAttribute and to use that in the python code base 
wherever __attribute__ is currently used.

On compilers that support __attribute__((format(printf, 
m, n))), PyAttribute could be defined, and on compilers 
that don't, it could define to nothing.

That way compilers that partially support __attribute__ 
would not get it silently defined away - which can be 
critical especially if you rely upon __attribute__((aligned
(n))).

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Fixed in pyport 2.54.