start of changes for supporting new xpt version
update timer.cpp/.h to provide functions for higher resolution timer
Allow -m to be repeatable so -m1 -m2 -m3 etc. no longer needed
Added -M option to show messages at launch
Fix up help messages
Add ping routine from jh00's xpt v6 commit
Default primorials based on Aero's defaults
change version so it makes a bit more sense in line with Aero's later versions