added an overloaded method.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@7565 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/model/AbstractProject.java

@@ -347,6 +347,11 @@ public abstract class AbstractProject<P extends AbstractProject<P,R>,R extends A
         return Hudson.getInstance().getQueue().add(this);
     }
 
+    public boolean scheduleBuild(int quietPeriod) {
+        if(isDisabled())    return false;
+        return Hudson.getInstance().getQueue().add(this,quietPeriod);
+    }
+
     /**
      * Schedules a polling of this project.
      */