FEATURE CHANGE:
bug fix: config 2 and select config=2 may not work properly (still)
bug fix: minimization of PCl4 (==PC4) does not auto-switch to UFF from MMFF94 (bond key not set)
JmolVersion="14.2.15_2015.07.22"
bug fix: config 1 does not work; listing is not complete.
JmolVersion="14.2.15_2015.07.11"
bug fix: write PDB broken for some systems (14.2.12)
bug fix: format("%5.-5i") broken -- only shows right four digits if # digits is 5.
