Now reading pdepreactions.txt files from old kinetics libraries.
Now reading pdepreactions.txt files from old kinetics libraries.

The functionality for this was inserted with the functionality for
processing the reactions.txt file, as the former is a specialized
version of the latter, with extra lines of information. This particular
code is a bit ugly, and will eventually be replaced when we overhaul the
database format.

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