verified via 1.0.2 tag that compiles by multiple people,
credit for the fix goes to paulusjacobus for the initial find and
sniffle for the correction so M851 works.

n_samples is an uint8_t .
Got printouts like:
50 of 2  ...

at least the lcd independent part from Marlin_main.cpp.

ZigZag has been disabled by fault due to do_topography_map

by:
Moving HAS_LCD_BUZZ macro to Coditionals.h
Renaming HAS_LCD_BUZZ to HAS_BUZZER to make clear is has nothing to do with the lcd.
Removing the ULTRALCD condition.

Moving declaration of lcd_buzz() out of the ULTRA_LCD block in ultralcd.h
Moving definition of lcd_buzz() out of the ULTIPANEL block in ultralcd.cpp
Renaming lcd_buzz() to buzz() to make clear is has nothing to do with the lcd.

All buzzing code is now only dependent on the existence of a BEEPER-pin or the definition of a LCD_USE_I2C_BUZZER.

To do: Check the conditions for the BEEPER-pin in all pin-files.

Now send only temperature for T or B, but not send OK.
Host interprets the line to show the right temperature, but not in
response to M105 then stop and send commands until it ends the autotune.

by avoiding the strncopy()

when DEFAULT_STEPPER_DEACTIVE_TIME is over
instead of simply turn off all.

More general solution to skip N[0-9]+[ ]* in the parser as in #2218

- When editing on the LCD, minus now means below the nozzle
- Stores the opposite sign in EEPROM, so bumped to “V20”

For sprintf_P() the first parameter has to be a `char*` not `const char*`.

replace extruder_multiply with extruder_multiplier
like feedrate_multiplier or volumetric_multiplier

- Use `setTargetedHotend` in `M200`, as with other commands that use
`T` for the extruder
- Synthesize the "invalid extruder" message, obviating several long
strings

Was omitted when T0 is a MAX6675.

to have it ready to display errors during (temperature)-setup.

- The command parser now displays “unknown command” in more cases.
Known commands must be added to the `switch` inside `process_commands`
to suppress the error.

- Affects code size when automatic bed leveling is enabled