[2.0.x] Tweak some SoftPWM code

Typo fix

[2.0.x] Configure stepper drivers per axis

Co-Authored-By: teemuatlut <teemu.mantykallio@live.fi>

[2.0.x] Manual Z Start Height

* Add Multi Unit Support for Max7219 to bugfix_2.0.0

* Apply multi-MAX7219 to example configs

* Tweak some spacing, macros

Fix #11279, #11252

[2.0.x] Add support for power loss detect pin

See https://github.com/MarlinFirmware/Marlin/issues/10949#issuecomment-398540498

[2.0.x] Malyan LCD Feedrate + Better Temp Handling

When `INCH_MODE_SUPPORT` is enabled no default unit is set. This fixes it.

It takes too long to display the mesh data for large mesh's at startup.   We should consider ways to speed this up.
Perhaps it makes sense to display an entire row of the mesh instead of just one mesh point?

This reverts commit a26fdf6b68.

On a leap of faith...  I'm merging...

[2.0.x] LPC1768: Expand hardware SPI class

Prevent crash, on filament change, when printer is not homed

Co-Authored-By: kaimimue <kaimimue@users.noreply.github.com>

This will fix kill message on dual printer with 0 alignment offset

When `REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER` is defined and Re-ARM build is attempted, `u8g_fontutf8.cpp` includes `fontutils.h` which uses `abs()`.

However, `abs()` is defined in `stdlib.h` which is not included in `fontutils.h`, so compile fails with an error.

Include `stdlib.h` in `fontutils.h` so that `abs()` is defined before `u8g_fontutf8.cpp` needs to use it, resolving the compile error.

Signed-off-by: Jamie Bainbridge <jamie.bainbridge@gmail.com>

[2.0.x] Shorter Z raise between multiple probes

Co-Authored-By: nightgryphon <ngryph@gmail.com>