first commit of sqcurve_tf_po file
Fixed 3D brick bifurcation
modified:   unstructured_three_d_fluid.cc
modified:   ../rayheader.h
unstructured_three_d_fluid can now switch between tets and hex.
The file testrun.sh helps run the program...
new file:   testrun.sh
modified:   unstructured_three_d_fluid.cc