Make the sample locations dynamic by adding a velocity vector. Face boundary
crossing is handled using the new ptex adjacency functionality recently
added to the Far::TopologyRefiner.
Sync'ing the 'dev' branch with the 'feature_3.0dev' branch at commit 68c6d11fc36761ae1a5e6cdc3457be16f2e9704a
The branch 'feature_3.0dev' is now locked and preserved for historical purposes.