Fixed bug in initial mapping construction in isMoleculeForbidden().
Fixed bug in initial mapping construction in isMoleculeForbidden().

The syntax used for the dict comprehension apparently doesn't work in
Python 2.6 (e.g. on pharos). This alternate syntax should work.

nyee/RMG-Py,KEHANG/RMG-Py,chatelak/RMG-Py,KEHANG/RMG-Py,pierrelb/RMG-Py,comocheng/RMG-Py,faribas/RMG-Py,nickvandewiele/RMG-Py,faribas/RMG-Py,enochd/RMG-Py,nickvandewiele/RMG-Py,chatelak/RMG-Py,pierrelb/RMG-Py,comocheng/RMG-Py,nyee/RMG-Py,enochd/RMG-Py