Added extra print on probing - sometimes we were losing it.
Add support for realtime counter queries.
 - reworked sysflags, because I ran out of bits.
removed all the line number  #defines - we are always going to use them
restored overly aggressive deletion
Don't Alarm on probe fail, only report
make sure homing seek rate is being honored
Merge remote-tracking branch 'origin/4axis-probe-report' into 4axis-probe-report
Merge branch '3axis-probe-report' into 4axis
need the -D flag