* BIP: add socket to listen to broadcast packets for Linux/Windows/BSD/Zephyr
* BIP: added BVLC broadcast handler to drop a packet when confirmed broadcast request is sent.
* https://sourceforge.net/p/bacnet/bugs/65/
* Remove dependence on endian define
* Make use of existing big_endian function if BACNET_BIG_ENDIAN is not defined
* Add efficient endian macro option if available
Co-authored-by: Steve Karg <skarg@users.sourceforge.net>