Bluetooth breaks pkgsrc/python

[walt]

I just noticed that the python socket module is broken on DEVEL
but the broken python gets installed anyway because the error is
non-fatal.

The broken code is in socketmodule.c and is surrounded by an
#ifdef USE_BLUETOOTH.  I'm afraid I know nothing about Bluetooth
or support for it in DFly, so I just undef'd USE_BLUETOOTH and
got python installed okay.

Has anyone else noticed this?