Use fully qualified names for isnan, isinf, and finite

Specify the versions in the global namespace, to avoid ambiguity
between these and the versions in namespace std that are available in
C++11.

git-svn-id: https://cantera.googlecode.com/svn/cantera/branches/2.1@2564 02a645c2-efd0-11dd-984d-ab748d24aa7e
[ck2cti] Accept reaction units declared in either order

That is, energy followed by quantity or quantity followed by energy.

git-svn-id: https://cantera.googlecode.com/svn/cantera/branches/2.1@2565 02a645c2-efd0-11dd-984d-ab748d24aa7e
[SCons] Fix undefined build variable when building MSI

git-svn-id: https://cantera.googlecode.com/svn/cantera/branches/2.1@2566 02a645c2-efd0-11dd-984d-ab748d24aa7e
Bump version to 2.1.0

git-svn-id: https://cantera.googlecode.com/svn/cantera/branches/2.1@2567 02a645c2-efd0-11dd-984d-ab748d24aa7e