- 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.

hmdata.h

@@ -60,6 +60,8 @@
                                 int start[MAXDIM], int end[MAXDIM]);
         int loadHMData(pHMdata self, SConnection *pCon, char *filename);                        
 
+        HistInt *subSample(pHMdata self, char *command, 
+        			char *error, int errLen);
 
 #endif