- Scriptcontext debugged to be working

- Added a drivable adapter to scriptcontext nodes
- Added subsampling to simulated histograms (and as a general option) in
  order to support Gumtree testing.

histsim.c

@@ -250,6 +250,21 @@
     return pDriv->fTime;
     
  }
+/*-------------------------------------------------------------------------*/
+HistInt *DefaultSubSample(pHistDriver self, SConnection *pCon,
+		int bank, char *command){
+	HistInt *data = NULL;
+	char error[132];
+	
+	assert(bank == 0); /* no bank handling yet.. */
+	
+	memset(error,0,132*sizeof(char));
+	data = subSample(self->data, command, error, 132);
+	if(data == NULL){
+		SCWrite(pCon,error,eError);
+	}
+	return data;
+}
 /*-------------------------------------------------------------------------*/
  pHistDriver CreateSIMHM(pStringDict pOpt)
  {
@@ -286,6 +301,7 @@
     pNew->FreePrivate = SimFreePrivate;
     pNew->Pause       = SimPause;
     pNew->Continue    = SimContinue;
+    pNew->SubSample = DefaultSubSample;
     StringDictAddPair(pOpt,"failrate","-1");
     
     return pNew;