More bugfixes to enable case-insensitive Chemkin file reading.
More bugfixes to enable case-insensitive Chemkin file reading.

Missed a few places that needed case insensitivity to be applied.

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