This mechanism, which is supposed to be the H2 mechanism extracted from GRI-3.0,
was actually missing the reaction H+O2+M <-> HO2+M. This updates the original
input file, regenerates h2o2.cti, and updates the blessed output file for one
test (which changed because the newer version of ck2cti actually retains the
given precision of the transport properties).
Write plain text to the common Cantera logger to be more consistent with the
verbose/debug logging from other parts of Cantera. This simplifies several of
the transport initialization functions, and eliminates the need for class
XML_Writer.
