********> bugfix.48
Author:   Bill Ross
Date:     23 Aug 1999

Programs: Leap

Severity: Severe if you load a new parmset to modify explicit
	torsions in a previously-loaded parmset.

Description:  When loading multiple parmsets (parm.dat/frcmod files),
	if a term of a torsion with no wildcard atom types exists in 
	two parmsets, the first one loaded is used, rather than the last.

	NOTE: this fix changes the behavior with respect to duplicate
	terms in the _same_ parmset; previously, the last instance
	was used, but now the first instance is used. (These rules
	will be rationalized in AMBER 6.)

Fix:	Make the following change to parmSet.c:
-------------------------------------------------------------------------------
*** OLD parmSet.c
--- NEW parmSet.c
*** 447,463
                i++, tmPCur++ ) {
            if ( tmPCur->tpTorsion.iN == tpPTorsion->iN ) {

-                   /* If the torsion that we are supposed to be adding is */
-                   /* not a general torsion then replace the one that */
-                   /* was there, whether or not it is general. */
-                   if ( strcmp( tpPTorsion->sType1, WILD_CARD_TYPE ) != 0 ) {
-                       if ( bUseIndex )
-                           tmPCur->iIndex = iIndex;
-                       else
-                           tmPCur->iIndex = PARM_NOT_FOUND;
-                       tmPCur->tpTorsion = *tpPTorsion;
-                       RETURN(PARM_FOUND_EXACT);
-                   }
                    RETURN(PARM_NOT_FOUND);
            }
      }

--- 447,452 -----  
                i++, tmPCur++ ) {
            if ( tmPCur->tpTorsion.iN == tpPTorsion->iN ) {

                    RETURN(PARM_NOT_FOUND);
            }
      }

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