I discovered that when converting a string to an int or float, the int
conversion allows whitespace after the sign, while the float conversion
doesn't. I think they should be consistent.

Moreover I think float is right and int is wrong.

Something to fix in 3.0, probably not in 2.6 (don't want to break too
much stuff that worked in 2.5).

For Python 3.0, this is a trivial fix:  two lines need to be removed 
from PyLong_FromString in longobject.c, and then the tests in 
test_builtin need to be fixed up.

(For Python 2.6, the fix would be a bit more involved:  PyOS_strtol 
would also need fixing.)

A good candidate for the bug day?

Only left the version 3.0, as the OP said it's not so important as to
break possible previous working code.

This is my first patch. 

Bug fix on revision 60076.

The same patch as before plus tests.

Fixed in r60090.

Thanks Juanjo for your contribution!

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