2010/12/20

0. added lines in the molread subroutine in readrtns_min.F file
   to read dfa_weight functions, WDFA, "wdfa" variable is added in COMMON.FFIELD

0-1. added lines in readrtns_min.F to print out dfa weights!
0-2. add subroutines to setup DFA variables & "READ fragment info" 
      -> init_dfa_vars
      -> read_dfa_info

1. added "gdfa_dist, gdfa_tor, gdfa_nei, gdfa_beta" to COMMON.DERIV

2. changed n_ene in DIMENSIONS from 23 to 27, since DFA has four terms......