Fix Issue 209.

installShomateThermoFromXML now checks that
7 coefficients are supplied in the floatArray and
throws if that is not the case.

Also update MaskeLLSolidSolnPhase_Test xml files
to correctly contain 7 coefficients to not trigger
the newly added throw.



git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2778 02a645c2-efd0-11dd-984d-ab748d24aa7e
Fix ThermoPhase::getElementPotentials and setElementPotentials

Broken in r2719.



git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2779 02a645c2-efd0-11dd-984d-ab748d24aa7e
Unit test ThermoPhase::getElementPotentials and setElementPotentials.



git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2780 02a645c2-efd0-11dd-984d-ab748d24aa7e