- Add `Conditionals.h` with calculated configuration values
- Add `SanityCheck.h` with checks for configuration errors
- Remove equivalent code from all configurations
- Move error checks from some sources to `SanityCheck.h` also
- Fix initialization of count_direction in stepper.cpp

Reduce size of menu code

In the new method we pass the character that should be used for
selected state, not the character to print always.

- Pass selected state directly to lcd_implementation_mark_as_selected
- Rename sel function parameter
- Include a minor fix for SdBaseFile.h

Get upstream changes

When one hit "Stop Print" option in LCD menu, the command buffer was not
cleared. The printer keep moving until the buffer has been emptied.
Actually I could not clear the command buffer as well.. I don't know
why, it doesnt work as expected.
I need to implement a routine inside Stepper ISR to handle such
situation.

Remove 6x9 font

Decrease KILL_DELAY

Negative times are unlikly

optional parameters must be named when ignoring order

lcd_control_retract_menu() is conditional.

lcd_autostart_sd() has two conditions.

delta[3] not used when DELTA not defined.

G4 could wait for an undefined time

Shoot in the dark.

Got:
Marlin_main.cpp:1689: warning: 'codenum' may be used uninitialized in this function

And indeed codenum is undefined when no parameter is given.

got:
Marlin_main.cpp:387: warning: 'delta' defined but not used

Compiles cleaner when definition is removed.

got:
ultralcd.cpp:408: warning: 'void lcd_autostart_sd()' defined but not used

Got:
ultralcd.cpp:64: warning: 'void lcd_control_retract_menu()' declared 'static' but never defined

While bunting an other bug I stumbled across:
ultralcd.cpp:1250: warning: comparison between signed and unsigned
integer expressions
Changed to the type of lcd_next_update_millis.

Users hat to press kill-button for unexpexted lon times.
See #1593

fix macro

with sources in /fonts

Delta auto bed level (Updated PR)

The Check Endstop logic must be:

if (current_block->steps_x != current_block->steps_y || (TEST(out_bits,
X_AXIS) == TEST(out_bits, Y_AXIS)))
if (TEST(out_bits, X_HEAD))

not

if (TEST(out_bits, X_HEAD) && (current_block->steps_x !=
current_block->steps_y || (TEST(out_bits, X_AXIS) == TEST(out_bits,
Y_AXIS))))

Same applies for Y axis.

in dogm_lcd_implementation.h
by using standard font and
shifting down temperature displays by one pixel
Saves 2300 bytes.

Conflicts:
	Marlin/Marlin_main.cpp

Move TOPO_ORIGIN define to Configuration.h

- Compare pr_char to space
- Fewer calls to lcd_strlen

- Get rid of _selected functions, passing selected state instead

- Addressing issue #1608

Fix #1611