Update files to match FreeBSD layout

Add compatibility with Newlib header files.  Some FreeBSD header files
are mapped by the translation script:

     o rtems/bsd/sys/_types.h
     o rtems/bsd/sys/errno.h
     o rtems/bsd/sys/lock.h
     o rtems/bsd/sys/param.h
     o rtems/bsd/sys/resource.h
     o rtems/bsd/sys/time.h
     o rtems/bsd/sys/timespec.h
     o rtems/bsd/sys/types.h
     o rtems/bsd/sys/unistd.h

It is now possible to include <sys/socket.h> directly for example.

Generate one Makefile which builds everything including tests.

rtemsbsd/include/machine/rtems-bsd-devicet.h

@@ -41,7 +41,7 @@
 #include <stdarg.h>
 #include <stdio.h>
 
-#include <freebsd/sys/queue.h>
+#include <sys/queue.h>
 
 typedef struct device *device_t;