Joint space area calculations

(Liz Marai and Leor's notes for this process are at $G/src/jspBin/README.txt and $G/src/jspBin/trail_contact_areas.txt)

Follow these steps to compute the distance maps:

1. Get required data files into the data root directory
   1. get the bone Geomagic meshes in OpenInventor format (e.g., <bone_tag>.iv)
   2. get the "animation file" for each bone, (e.g., <bone_tag>_anim.RT)
   3. get anatomical coordinate system for each bone (e.g., <bone_tag>_coord.dat)
2. Prepare scripts
   1. copy the "joints_one_linux" and "joints_linux" from $G/bin/jspBin/ to your data's top-level directory
   2. replace "set data_directory" lines in both with the path to your directory
   3. replace bone tags with the ones of interest (e.g., bone_tag_1=sca15L and bone_tag_2=lun15L)
   4. see further options at $G/src/jspBin/trail_contact_areas.txt
3. Run scripts
   1. ./joints_one_linux
   2. ./joints_linux

For more details, see $G/src/jspBin/README.txt and $G/src/jspBin/trail_contact_areas.txt.