Tahoe Code SVN development

updated materials to use ElementSupportT for information instead of an
FEManagerT&. There are not more direct accesses to the FEManagerT in the
materials tree. It all compiles.

the whole element tree now compiles with multifield

The elements/contact and elements/cohesive_surface trees now compile

This commit was manufactured by cvs2svn to create tag 'T050102'.

fixed load-displacement for values above surface mean plane

removed ConHyperGeom and GenHyperGeom classes; these can now found in Kummer class

removed tables to calculate values;
consolidated contact area calculation of Greenwood & Williamson model into 1 method;
modified calls to GW to reflect changes

Kummer function of 1st kind (confluent hypergeometric function)

will compile Gamma.cpp

This commit was manufactured by cvs2svn to create branch 'BRANCH_field_1'.