Fix home_all_axis to make QUICK_HOME work with Repetier-Host which sends G28 X0 Y0 Z0 instead of G28. Thanks to Matt Schoenholz for reporting this issue.

Marlin/Marlin_main.cpp

@@ -729,7 +729,8 @@ void process_commands()
         destination[i] = current_position[i];
       }
       feedrate = 0.0;
-      home_all_axis = !((code_seen(axis_codes[0])) || (code_seen(axis_codes[1])) || (code_seen(axis_codes[2])));
+      home_all_axis = !((code_seen(axis_codes[0])) || (code_seen(axis_codes[1])) || (code_seen(axis_codes[2])))
+                    || ((code_seen(axis_codes[0])) && (code_seen(axis_codes[1])) && (code_seen(axis_codes[2])));
       
       #ifdef QUICK_HOME
       if (home_all_axis)  // Move all carriages up together until the first endstop is hit.