AnHardt fd5414c6ea Z_RAISE_BEFORE_HOMING -> MIN_Z_HEIGHT_FOR_HOMING
rebased
corrected spelling
changed to #elif for error

Still with MIN_Z_HEIGHT_FOR_HOMING but con be done with (folder wide) search-replace when we have a better name.
..
Configuration.h Z_RAISE_BEFORE_HOMING -> MIN_Z_HEIGHT_FOR_HOMING
Configuration_adv.h update example configurations