Reorganise tests to run as part of make process
Combine gvm_get_position() and gvm_get_physical()

Easier to switch between modes.
Add physical mode to gvm_get_delta()
Enable sloppy by default
Fix bug in G92 handling
Tidy up austerus-verge port to gvm
Port get_progress_table() and austerus-send to use gvm
Reinstate old stats functions needed by austerus-shift