Bluetooth socket support is disabled on NetBSD and DragonFly BSD #132429

Despite that there is a code to support Bluetooth sockets on NetBSD and DragonFly BSD, it did not work from 2010 (see 2501aca, 3e85dfd) due to error in conditional compilation. Condition (defined(HAVE_BLUETOOTH_H) || defined(HAVE_BLUETOOTH_BLUETOOTH_H)) && !defined(__NetBSD__) && !defined(__DragonFly__) is always false on NetBSD and DragonFly BSD, so USE_BLUETOOTH was not defined, and the code was omitted during compilation.

cc @gpshead

Linked PRs

• gh-132429: Fix support of Bluetooth sockets on NetBSD and DragonFly BSD #132431
• [3.13] gh-132429: Fix support of Bluetooth sockets on NetBSD and DragonFly BSD #132458
• gh-132429: Remove not working test for Bluetooth socket #132459