Reverted change in crd2pdb to use chain names in alphabetical order instead of taking chain names from crd file. This is because other programs like mini_pwl etc still do not produce crd files in the new format. Also fixed the code to recognize NTRP/NTRG and CTRG/CTRP apart from NTER/CTER.

git-svn-id: https://svn.ices.utexas.edu/repos/clsb/trunk/moil@4925 90e2fc84-bd37-0410-82f1-ae2f889bfac2
Fixed a bug in seq. Variable name needed to be changed from sequence(idx) to prev_res for CTERminal parsing, lines 345 and 347.Else Proline cterminal gets printed as CTER instead of CTRP. Same for glycine.

git-svn-id: https://svn.ices.utexas.edu/repos/clsb/trunk/moil@4926 90e2fc84-bd37-0410-82f1-ae2f889bfac2