Proposed changes

This is what I did yesterday:

- basicly gave the tests more comprehensive names; put all the
declarations at the top; got rid of the magic negative C-value (renamed
to P + A, O, T)

- "cos(RADIANS(180 + 30 * axis)) * (1 + circles * 0.1 * ((zig_zag) ? 1 :
-1)) * delta_calibration_radius" compiles wrong is zig_zag statement is
without brackets

- DELTA_TOWER_ANGLE_TRIM reset to 3 values (the calcs use the 3th value
to normalize will not compile otherwise)

-Wrote 3 dummies to keep EEPROM lenght the same

-Reset the configs to the 'original' with autocal + menu disabled (but
can be enabled of course)

Marlin/Conditionals_post.h

@@ -695,16 +695,16 @@
       #define DELTA_CALIBRATION_RADIUS DELTA_PRINTABLE_RADIUS - 10
     #endif
     #ifndef DELTA_ENDSTOP_ADJ
-      #define DELTA_ENDSTOP_ADJ { 0.0, 0.0, 0.0 }
+      #define DELTA_ENDSTOP_ADJ { 0, 0, 0 }
     #endif
     #ifndef DELTA_TOWER_ANGLE_TRIM
-      #define DELTA_TOWER_ANGLE_TRIM { 0.0, 0.0 } // C always 0.0
+      #define DELTA_TOWER_ANGLE_TRIM {0, 0, 0}
     #endif
     #ifndef DELTA_RADIUS_TRIM_TOWER
-      #define DELTA_RADIUS_TRIM_TOWER { 0.0, 0.0, 0.0 }
+      #define DELTA_RADIUS_TRIM_TOWER {0, 0, 0}
     #endif
     #ifndef DELTA_DIAGONAL_ROD_TRIM_TOWER
-      #define DELTA_DIAGONAL_ROD_TRIM_TOWER { 0.0, 0.0, 0.0 }
+      #define DELTA_DIAGONAL_ROD_TRIM_TOWER {0, 0, 0}
     #endif
   #endif