Changes to MHD jump solver and affected simulation initializers: Same format as HDJumpSolver and uses cubic instead of quartic equation formulation.
Fix 'fallthrough' at last statement in switch Eclipse kept whining about
Add a few Matlab MEX utilities to cudaCommon; aesthetic changes to others, but fix serious 2nd-order error in cudaSourceRotatingFrame also.
Merges cudaFluidW.cu and cudaFluidTVD.cu into one call, saving many registers in their kernels & time in Matlab on code that will never change.
Fix glitches in test suite execution, esp bug in Sod tube test that failed to update global indexer after each sim
Update gpu makefile to build cudaFluidStep