- 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.

HistMem.i

@@ -1,5 +1,5 @@
 
-#line 483 "histogram.w"
+#line 485 "histogram.w"
 
 /*---------------------------------------------------------------------------
                         H I S T M E M -- Internal
@@ -11,7 +11,7 @@
 #ifndef SICSHISTMEMINT
 #define SICSHISTMEMINT
 
-#line 254 "histogram.w"
+#line 256 "histogram.w"
 
    typedef struct __HistMem {
                               pObjectDescriptor pDes;
@@ -23,7 +23,7 @@
                               pICallBack  pCall;
                             } HistMem;
 
-#line 493 "histogram.w"
+#line 495 "histogram.w"
 
 
 #endif