Fixed the following components:

 - wham: in whamcalc1.F added ehomology_constr and DFA energy components to
         the minimal free energies; lack of this was often causing NaNs in
         the *.thermal files.
- cluster: (i) assigned logical unit 38 to ientin (unasigned in the previou
         source; (ii) Fixed buffer conflict in MPI_AllGather
- wham and cluster: ebend made compatible with that of the unres component