- 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.c

@@ -834,7 +834,7 @@ void HistDirty(pHistMem self)
          return 0;
    }
 
-   if(iEnd > iDataLen/sizeof(HistInt))
+   if( (iEnd -iStart) > iDataLen/sizeof(HistInt))
    {
      SCWrite(pCon,"WARNING: truncating request to fit data space",eWarning);
      iEnd = (iDataLen/sizeof(HistInt)) - 1;
@@ -1138,7 +1138,7 @@ static int checkHMEnd(pHistMem self, char *text){
                return 0;
              }
              memset(pBuf,0,iRet+60);
-             HistGetOption(self,argv[2],pBuf,iRet);
+             HistGetOption(self,argv[2],pBuf,iRet+60);
              sprintf(pBueffel,"%s.%s = %s",argv[0],argv[2],pBuf);
              SCWrite(pCon,pBueffel,eValue);
              free(pBuf);