Feature/makefile add apps library (#218)

* add BACnet stack library at apps/lib

* convert apps to use apps/lib for smaller binary

* fix -DBACDL_ALL=1 build

* fix piface build

* datalink MAX_MPDU and MAX_HEADER cleanup

* add bip6 to git workflow

* fix system library dependency of BACnet library

Co-authored-by: Steve Karg <skarg@users.sourceforge.net>

ports/win32/rs485.c

@@ -226,7 +226,7 @@ static void RS485_Configure_Status(void)
         RS485_Print_Error();
     }
     /* Set the Comm buffer size */
-    SetupComm(RS485_Handle, MAX_MPDU, MAX_MPDU);
+    SetupComm(RS485_Handle, DLMSTP_MPDU_MAX, DLMSTP_MPDU_MAX);
     /* raise DTR */
     if (!EscapeCommFunction(RS485_Handle, SETDTR)) {
         fprintf(stderr, "Unable to set DTR on %s\n", RS485_Port_Name);