Changed sign of X/Y interlock
Temp modifications of communication through ethernet - fixed IP

Fixed small bug in NetworkIO -- when recieving a movement command for the steppers, treat it immeadiately before continuing to parse!

Changed order of stepper_axnames, changed pins for limit switches (now properly working in all axis), changed, changed stepper_onlimit_steps to 50

Support multiple temperature busses

See merge request !3

Config pins fixes

See merge request !2

Arduino networking code

See merge request !1

Also, don't parse input from disconnected TTYs

Also change output of steps to 11 wide, which will fit any such int, unsigned or with a minus sign.
We always use preceding 0's for supereasy but fragile parsing later.

Also fixes a few small misc bugs.

* More and improved parser debug tests (python tool)
* Moved output buffer writeout code to separate function output_buff_flush()
* Allowed ''immediate'' commands, which will move actuators etc. to go at once, pausing interpreting.
  This makes sure the control ''registers'' for these are consistent, so that the order of actuations are
  resolved based on the order of the commands not the order the registers that the commands set are checked in loop().