Major reorganization of the entire package. The config.xml file
is now irrelevant. All the action is in the tool.xml file. The
main program now organizes all input into 1) side-by-side pages,
2) input/result (wizard-style) pages, or 3) a series of wizard-
style pages. The <input> can have <phase> parts representing
the various pages.
Added a new ContourResult? widget based on Swaroop's vtk plotting
code.
Also, added easymesh and showmesh to the "tools" directory.
We need these for Eric Polizzi's code.
