Marlin firmware fork for MakerFarm i3v w/ auto bed level & Roxy's enhancements

[Roxy]

Hi all,
I have just tested a bunch of the changes people have posted including Roxy's. I'll get them into the fork in the next couple of days after a few more prints. Stay tuned!

Darn! I wish I knew you were going to do that... I fixed a bug in the Bed Level Topology Report for the Front-Right case:

#ifdef ORIGIN_FRONT_RIGHT
for(yy=0; yy<n_points; yy++ {
for(xx=0; xx<n_points; xx++) {
SERIAL_PROTOCOLPGM(" ");
if ( eqnBVector[ (n_points*n_points)-yy-(xx*n_points)-1 ]-mean >= 0.0)
SERIAL_PROTOCOLPGM("+");
else
SERIAL_PROTOCOLPGM("-"); // we need this extra - because Proterface uses a preportional
// font and it causes the columns to not line up nice without it.
SERIAL_PROTOCOL_F( eqnBVector[ (n_points*n_points)-yy-(xx*n_points)-1 ]-mean, 5);
}
SERIAL_PROTOCOLPGM(" \n");
}
SERIAL_PROTOCOLPGM(" \n");
#endif // ORIGIN_FRONT_RIGHT