Add Id strings

sys/dev/snp/snp.c

@@ -11,6 +11,8 @@
  * This software is provided ``AS IS'' without any warranties of any kind.
  *
  * Snoop stuff.
+ *
+ *	$Id$
  */
 
 #include "snp.h"

sys/kern/subr_blist.c

@@ -59,6 +59,8 @@
  *	ranges.
  *
  *	This code can be compiled stand-alone for debugging.
+ *
+ *	$Id$
  */
 
 #ifdef KERNEL

sys/kern/tty_snoop.c

@@ -11,6 +11,8 @@
  * This software is provided ``AS IS'' without any warranties of any kind.
  *
  * Snoop stuff.
+ *
+ *	$Id$
  */
 
 #include "snp.h"

sys/kern/vfs_default.c

@@ -35,6 +35,8 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
+ *
+ *	$Id$
  */
 
 #include <sys/param.h>