* Get UBL Mesh Generation, Mesh Save & Mesh Load working with 32-Bit platforms

* clean up read_data() and write_data() for non-LPC1768 HAL's

* Get read_data() and write_data() return codes consistent

All HAL's read_data() and write_data() return false if they succeed.

* Get read_data() and write_data() return codes to be consistent

Make read_data() and write_data() return true if an error happens.

* Say UBL is now checked out on machine types in default Configuration.h file.

Also, Max7219 debug code was used for this effort.   It has been
improved and hardened.

Based on #7883 by @studiodyne

Based on #7948

* Add files via upload

* Add files via upload

* Add files via upload

* Checked LCD / edited / revised pins_MKS_BASE.h

As requested :)

* Delete Configuration_adv.h

* Delete Configuration.h

* Deleted /Marlin/Marlin/src/config/examples/MksSbase/*.* and moved them to /Marlin/Marlin/src/config/examples/Mks/Sbase/*.*

* Add files via upload

Fix 'axis_unhomed_error' not defined error when pause with unhomed status

So now this script is compatible with both python versions 2 and 3

Signed-off-by: Alexey Shvetsov <alexxy@gentoo.org>

get rid of twi.h

move to board files

Setup FolgerTech i3-2020 Configuration files as a reference platform for
32-Bit work.

Also fix MAX7219 debug lights on 32-bit platforms.

Same as #7728 but for 2.0.x,
Lot of cleanup and remove references in whole code to other "LED files" than leds.h. Now will be much easier to add next drivers/libraries. e.g. FastLED. But bad news, currently FastLED is suporting only RGB devices (no RGBW)

Compiler error, added char c variable

Fix double character sent when TX buffer size is 0 on mega2560

* Auto-enable DISABLE_REDUCED_ACCURACY_WARNING if HOME_AFTER_DEACTIVATE enabled

If HOME_AFTER_DEACTIVATE, there is no need to warn on LCD since printer will home prior to starting print.  Saves 60 bytes PROGMEM on AVR with U8g panel.

* Reduce lines used

* Reduce lines used

Alternative to #7882. If F_CPU is greater than 1000 it can be evenly divided by 8. Over 10000, 16; over 100000, 32; over 1 million, 64; etc.

Add to controllerfan.cpp:
#include "../module/stepper_indirection.h"
#include "../module/temperature.h"

Change "extruder" to HOTEND in sanity error messages