2/3/00 A. Liwo
Corrected the dimensions of the array ityp_coupl in COMMON.MORASS
Before: ityp_coupl(maxtyp_coupl)
Now:    ityp_coupl(maxnum_dihe*maxnum_res)

12/18/01 A. Liwo
Corrected the definition of type-6 beta-turn. The omega angle 
between residues i+1 and i+2 should be considered while checking for a
type-VI beta-turn, while that between residues i+2 and i+3 was taken.
Modules affected: beta_turns, file beta_turns.f