Rename hydra_*.pl to hydra-*

The underscores are ugly and the .pl extension is an implementation
detail that shouldn't be visible to the outside.

Also, get rid of the *.in files.  It's not really necessary to
generate them.  And I was always modifying the wrong file.

src/script/hydra-control

@@ -0,0 +1,42 @@
+#! /bin/sh
+
+action="$1"
+
+if test -z "$HYDRA_DATA"; then
+    echo "Error: \$HYDRA_DATA is not set";
+    exit 1
+fi
+
+if test "$action" = "start"; then
+
+    hydra_server.pl > $HYDRA_DATA/server.log 2>&1 &
+    echo $! > $HYDRA_DATA/server.pid
+
+    hydra_evaluator.pl > $HYDRA_DATA/evaluator.log 2>&1 &
+    echo $! > $HYDRA_DATA/evaluator.pid
+
+    hydra_queue_runner.pl > $HYDRA_DATA/queue_runner.log 2>&1 &
+    echo $! > $HYDRA_DATA/queue_runner.pid
+
+elif test "$action" = "stop"; then
+
+    kill $(cat $HYDRA_DATA/server.pid)
+    kill $(cat $HYDRA_DATA/evaluator.pid)
+    kill $(cat $HYDRA_DATA/queue_runner.pid)
+
+elif test "$action" = "status"; then
+
+    echo -n "Hydra web server... "
+    (kill -0 $(cat $HYDRA_DATA/server.pid) 2> /dev/null && echo "ok") || echo "not running"
+    
+    echo -n "Hydra evaluator... "
+    (kill -0 $(cat $HYDRA_DATA/evaluator.pid) 2> /dev/null && echo "ok") || echo "not running"
+    
+    echo -n "Hydra queue runner... "
+    (kill -0 $(cat $HYDRA_DATA/queue_runner.pid) 2> /dev/null && echo "ok") || echo "not running"
+    
+
+else
+    echo "Syntax: $0 [start|stop|status]"
+    exit 1
+fi