Saving G29 Bed Level Correction Matrix to EEPROM

[beerdart]

Now that we have this mod to save the G29 matrix for an entire print session (or longer), it is no longer necessary to add a G29 to the start gcode when slicing. However, those of us who run our printers standalone, we need another way of running the G29 when we change a setting or a glass plate. I believe that many who run their printer standalone have an LCD display on their printer. Here's what I did to add G29 to the LCD menu:

In ultralcd.cpp, find MENU_ITEM(gcode, MSG_AUTO_HOME, PSTR("G28"));
Just after it, add MENU_ITEM(gcode, MSG_BED_LEVEL, PSTR("G29 n5"));

In language.h, find #define MSG_ENDSTOP_ABORT "Endstop abort"
Just after it, add #define MSG_BED_LEVEL "G29 Bed Level"

Thank you works awesome just need to "Auto Home" prior to G29