Allow 999.local to run scripts in any language

If one of the scripts listed in (daily|weekly|monthly)_local is executable,
999.local should simply execute it. Only if the script isn't executable
should 999.local assume it needs /bin/sh.

Reviewed by:	brian
MFC after:	3 weeks
Sponsored by:	Spectra Logic Corp

etc/periodic/daily/999.local

@@ -20,7 +20,12 @@ do
     echo ''
     case "$script" in
 	/*)
-	    if [ -f "$script" ]
+	    if [ -x "$script" ]
+	    then
+		echo "Running $script:"
+
+		$script || rc=3
+	    elif [ -f "$script" ]
 	    then
 		echo "Running $script:"
 

etc/periodic/monthly/999.local

@@ -17,7 +17,12 @@ do
     echo ''
     case "$script" in
 	/*)
-	    if [ -f "$script" ]
+	    if [ -x "$script" ]
+	    then
+		echo "Running $script:"
+
+		$script || rc=3
+	    elif [ -f "$script" ]
 	    then
 		echo "Running $script:"
 

etc/periodic/weekly/999.local

@@ -17,7 +17,12 @@ do
     echo ''
     case "$script" in
 	/*)
-	    if [ -f "$script" ]
+	    if [ -x "$script" ]
+	    then
+		echo "Running $script:"
+
+		$script || rc=3
+	    elif [ -f "$script" ]
 	    then
 		echo "Running $script:"