Tahoe Code SVN development

New IRI Surface and Plastic Potential

1. Combined predictor + corrector functions into one, because of constant acceleratin assumption

check dimension of nodal variable array before using it

implementation of the TiedPotentialBaseT interface

revisions for changes to TiedPotentialBaseT

1. Modified to see if search finds ghost atoms

changes const bool& qIntegrate to bool qIntegrate in the argument list
for Traction.

(1) updated model to new integrate flag in the call to Traction
(2) store damage rate in the state variables
(3) corrected error in the Jacobian
model now demonstrates quadratic convergence

1. Added predictor/corrector algorithm for FEM solutions interpolated to MD boundaries

changed argument list and return value for InterpolationNodes (does not
compile)