[docs] [issue25043] document socket constants for Bluetooth

[Martin Panter]

Martin Panter added the comment:

Thanks for your work on this. I think the patch is good, although I might add :const:`BDADDR_ANY` etc markup around the references within the text.

By the way, you don’t normally need to make separate patches for each branch. When I commit this I will just apply the 3.4 version, and then automatically merging to the other branches should be trivial.

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assignee: docs at python -> martin.panter
nosy: +berker.peksag
stage:  -> commit review

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<http://bugs.python.org/issue25043>
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