Tahoe Code SVN development

(just about completed) calculation of the mass flux ad flux velocity

disable material force by default

moved configuration headers into config directory in the build tree

implemented calculation of stress gradient driving term

added method needed by element computing transport

partial implementation of mass flux calculation

FEManagerT_bridging::InitInterpolation now takes the coordinates rather than
the NodeManagerT as an argument

ongoing implementation of mixture theory

Updating CVS before parallel revision

updates