ScriptProcessor: do not implement SingletonPlugin

These plugins are not singletons; they have state. The
ScriptProcessorService creates new instances as needed,
and feeds ScriptInfos to them.

The ScriptProcessorService service did not implement SingletonService,
but DefaultScriptProcessorService extended AbstractSingletonService,
so clearly I got my wires crossed when I wrote this.

Author: ctrueden

src/main/java/org/scijava/script/process/DefaultScriptProcessorService.java

@@ -32,7 +32,7 @@
 
 package org.scijava.script.process;
 
-import org.scijava.plugin.AbstractSingletonService;
+import org.scijava.plugin.AbstractPTService;
 import org.scijava.plugin.Plugin;
 import org.scijava.service.Service;
 
@@ -43,8 +43,7 @@
  */
 @Plugin(type = Service.class)
 public class DefaultScriptProcessorService extends
-	AbstractSingletonService<ScriptProcessor> implements
-	ScriptProcessorService
+	AbstractPTService<ScriptProcessor> implements ScriptProcessorService
 {
 	// NB: No implementation needed.
 }

src/main/java/org/scijava/script/process/ScriptProcessor.java

@@ -32,7 +32,7 @@
 
 package org.scijava.script.process;
 
-import org.scijava.plugin.SingletonPlugin;
+import org.scijava.plugin.SciJavaPlugin;
 import org.scijava.script.ScriptInfo;
 
 /**
@@ -46,7 +46,7 @@
  * 
  * @author Curtis Rueden
  */
-public interface ScriptProcessor extends SingletonPlugin {
+public interface ScriptProcessor extends SciJavaPlugin {
 
 	void begin(ScriptInfo info);
 	String process(String line);