- added backwards calculation of hkl from four circle angles. This

required inclusion of a matrix package.
- modified  counter error handling to send a Stop when the _BAD_BUSY
  error is received.
- added an environment interface to the general controller stuff in choco.*
  Also added setting a parameter directly at the controller object.
- Added a driver for the ETH High Temperature Furnace to be used at
  SANS.

SCinter.c

@@ -302,10 +302,13 @@ extern char *SkipSpace(char *pPtr);
     pCurrent = self->pCList;
     while(pCurrent)
     {
-      if(strcmp(pCurrent->pName, pBueffel) == 0 )
+      if(pCurrent->pName != NULL)
       {
-        return pCurrent;
-      }
+        if(strcmp(pCurrent->pName, pBueffel) == 0 )
+        {
+          return pCurrent;
+        }
+      }  
       pCurrent = pCurrent->pNext;
     }
     return NULL;