minor database API change

plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java

@@ -204,7 +204,7 @@ public class VCDDbLoader implements IWaveformDbLoader, IVCDDatabaseBuilder {
 	@Override
 	public int getNetWidth(int intValue) {
 		VCDSignal<?> signal = (VCDSignal<?>) signals.get(intValue);
-		return signal.getWidth();
+		return signal.getRowCount();
 	}
 
 	/* (non-Javadoc)

plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDSignal.java

@@ -109,7 +109,7 @@ public class VCDSignal<T extends IEvent> extends HierNode implements IWaveform {
 	}
 
 	@Override
-	public int getWidth() {
+	public int getRowCount() {
 		return width;
 	}
 
@@ -118,4 +118,8 @@ public class VCDSignal<T extends IEvent> extends HierNode implements IWaveform {
 		return "signal";
 	}
 
+	@Override
+	public void calculateConcurrency() {
+	}
+
 }