ck2cti.py supports extended format for large molecule compositions

This extension places extra elemental composition data at the end of the first
line of the thermo data. See 'soot.inp' for an example.

interfaces/python/ck2cti.py

@@ -885,6 +885,13 @@ def readThermoEntry(entry, TintDefault):
     elements = lines[0][24:44]
     composition = parseComposition(elements, 4, 5)
 
+    # Non-standard extended elemental composition data may be located beyond
+    # column 80 on the first line of the thermo entry
+    if len(lines[0]) > 80:
+        elements = lines[0][80:]
+        composition2 = parseComposition(elements, len(elements)/10, 10)
+        composition.update(composition2)
+
     # Construct and return the thermodynamics model
     thermo = MultiNASA(
         polynomials = [