********> bugfix.24
Author: 	Bill Ross
Date:   	3/22/98

Programs: 	Carnal

Severity: 	Moderate

Description:	In TORSION BACKBONE, if the last molecule has <4 
		main-chain atoms and the previous molecule with >4
		main-chain atoms formed a cycle, the program may 
		exit with the message, "programming error." (This is 
		because the "cycle flag" on the previous molecule
		was being overwritten by the "end of molecule" flag
		on the last molecule, due to an index error.)

Fix:  		Make the following change to pointax.c:
--------------------------------------------------------------------------
*** OLD pointax.c
--- NEW pointax.c
***************
*** 533,539
  			 *  not enough 4 torsion - back up
  			 */
  			smallmol++;
! 			iarr = iarr_first-1;
  			if (iarr < 0) iarr = 0;
  			iarr_last = iarr;
  		} else {

--- 533,539 -----
  			 *  not enough 4 torsion - back up
  			 */
  			smallmol++;
! 			iarr = iarr_first;
  			if (iarr < 0) iarr = 0;
  			iarr_last = iarr;
  		} else {
--------------------------------------------------------------------------