Added universal ID in molecules.dat, removed elemental
info from this same file.  Modified at_read.c getmass (renamed to
getmoldata) to read mass (simplified) and read mol ID.  Modified
readlineinfo.c to read updated molecules.dat file.  Added valueinarray
to iomisc.c to check if in is in an array.  Now I'm counting the
number of molecules with linelists.