[ctml_writer] Updated constants to have more accurate values

Cherry-pick of r2046 from trunk.

git-svn-id: https://cantera.googlecode.com/svn/cantera/branches/2.0@2371 02a645c2-efd0-11dd-984d-ab748d24aa7e
[Kinetics] Allow coverage dependencies for edge reactions

Cherry-pick of r2271 from trunk.

git-svn-id: https://cantera.googlecode.com/svn/cantera/branches/2.0@2372 02a645c2-efd0-11dd-984d-ab748d24aa7e
[Kinetics] Fixed a NaN result in falloff reaction rates

A NaN result could be caused by an underflow in the high-pressure rate
expression.

Cherry-pick of r2282 from trunk.

git-svn-id: https://cantera.googlecode.com/svn/cantera/branches/2.0@2373 02a645c2-efd0-11dd-984d-ab748d24aa7e
[Matlab] Fixed integration failure in surfreactor example

Cherry-pick of r2283 from trunk.

git-svn-id: https://cantera.googlecode.com/svn/cantera/branches/2.0@2374 02a645c2-efd0-11dd-984d-ab748d24aa7e
Add __version__ attribute to the Python module

Cherry-pick of r2370 from trunk.

git-svn-id: https://cantera.googlecode.com/svn/cantera/branches/2.0@2375 02a645c2-efd0-11dd-984d-ab748d24aa7e