Apply all changes from latest Marlin_V1

Diffed and merged, preserving my updates

Marlin/planner.h

@@ -60,6 +60,10 @@ typedef struct {
   unsigned long final_rate;                          // The minimal rate at exit
   unsigned long acceleration_st;                     // acceleration steps/sec^2
   unsigned long fan_speed;
+  #ifdef BARICUDA
+  unsigned long valve_pressure;
+  unsigned long e_to_p_pressure;
+  #endif
   volatile char busy;
 } block_t;
 
@@ -135,7 +139,9 @@ FORCE_INLINE bool blocks_queued()
     return true;
 }
 
-void allow_cold_extrudes(bool allow);
+#ifdef PREVENT_DANGEROUS_EXTRUDE
+void set_extrude_min_temp(float temp);
+#endif
 
 void reset_acceleration_rates();
 #endif