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>
When a user executes a User Menu command, the LCD returns to the main menu. If the user has multiple menu items they want to run, such as one menu item per bed leveling corner, then it's better to stay in the User Menu rather than return to the main menu.
This PR modifies Marlin to stay in the User Menu after a command.
Jamie BainbridgeandScott Lahteine
