(svn r25498) [1.3] -Backport from trunk:

- Fix: [NewGRF] When cargo NewGRF define a multiplier to modify vehicle capacities, use the same multiplier to modify loading speed (r25497, r25479)
- Fix: [OSX] OS X SDK versions >= 10.5 always have a non-const iconv declaration (r25480)
- Fix: Disable the depot-refit button in the order GUI, if the consist is not refittable unless it already has a refit order (r25459, r25458, r25457)

config.lib

@@ -1754,7 +1754,7 @@ make_cflags_and_ldflags() {
 			fi
 		fi
 
-		if [ "$have_non_const_iconv" != "no" ]; then
+		if [ "$os" != "OSX" ] && [ "$have_non_const_iconv" != "no" ]; then
 			CFLAGS="$CFLAGS -DHAVE_NON_CONST_ICONV"
 		fi
 	fi
@@ -3488,7 +3488,7 @@ generate_src_osx() {
 				CFLAGS="-isysroot $osx_sdk_path $CFLAGS_orig"
 				LDFLAGS="-Wl,-syslibroot,$osx_sdk_path $LDFLAGS_orig"
 			fi
-			CFLAGS="$CFLAGS -D_SQ64 -DHAVE_NON_CONST_ICONV -DNO_QUICKTIME -UENABLE_COCOA_QUICKDRAW"
+			CFLAGS="$CFLAGS -D_SQ64 -DNO_QUICKTIME -UENABLE_COCOA_QUICKDRAW"
 			LIBS="`echo $LIBS | sed 's/-framework QuickTime//'`"
 		fi
 

src/economy.cpp

@@ -1313,10 +1313,11 @@ static void LoadUnloadVehicle(Vehicle *front, int *cargo_left)
 		artic_part++;
 
 		const Engine *e = v->GetEngine();
-		byte load_amount = e->info.load_amount;
+		uint load_amount = e->info.load_amount;
 
 		/* The default loadamount for mail is 1/4 of the load amount for passengers */
-		if (v->type == VEH_AIRCRAFT && !Aircraft::From(v)->IsNormalAircraft()) load_amount = CeilDiv(load_amount, 4);
+		bool air_mail = v->type == VEH_AIRCRAFT && !Aircraft::From(v)->IsNormalAircraft();
+		if (air_mail) load_amount = CeilDiv(load_amount, 4);
 
 		if (_settings_game.order.gradual_loading) {
 			uint16 cb_load_amount = CALLBACK_FAILED;
@@ -1337,6 +1338,9 @@ static void LoadUnloadVehicle(Vehicle *front, int *cargo_left)
 			}
 		}
 
+		/* Scale load amount the same as capacity */
+		if (HasBit(e->info.misc_flags, EF_NO_DEFAULT_CARGO_MULTIPLIER) && !air_mail) load_amount = CeilDiv(load_amount * CargoSpec::Get(v->cargo_type)->multiplier, 0x100);
+
 		GoodsEntry *ge = &st->goods[v->cargo_type];
 
 		if (HasBit(v->vehicle_flags, VF_CARGO_UNLOADING) && (front->current_order.GetUnloadType() & OUFB_NO_UNLOAD) == 0) {

src/order_gui.cpp

@@ -28,6 +28,7 @@
 #include "core/geometry_func.hpp"
 #include "hotkeys.h"
 #include "aircraft.h"
+#include "engine_func.h"
 
 #include "widgets/order_widget.h"
 
@@ -518,6 +519,7 @@ private:
 	OrderPlaceObjectState goto_type;
 	const Vehicle *vehicle; ///< Vehicle owning the orders being displayed and manipulated.
 	Scrollbar *vscroll;
+	bool can_do_refit;     ///< Vehicle chain can be refitted in depot.
 	bool can_do_autorefit; ///< Vehicle chain can be auto-refitted.
 
 	/**
@@ -786,8 +788,10 @@ private:
 	/** Cache auto-refittability of the vehicle chain. */
 	void UpdateAutoRefitState()
 	{
+		this->can_do_refit = false;
 		this->can_do_autorefit = false;
-		for (const Vehicle *w = this->vehicle; w != NULL; w = w->Next()) {
+		for (const Vehicle *w = this->vehicle; w != NULL; w = w->IsGroundVehicle() ? w->Next() : NULL) {
+			if (IsEngineRefittable(w->engine_type)) this->can_do_refit = true;
 			if (HasBit(Engine::Get(w->engine_type)->info.misc_flags, EF_AUTO_REFIT)) this->can_do_autorefit = true;
 		}
 	}
@@ -1014,8 +1018,11 @@ public:
 					this->SetWidgetLoweredState(WID_O_FULL_LOAD, order->GetLoadType() == OLF_FULL_LOAD_ANY);
 					this->SetWidgetLoweredState(WID_O_UNLOAD, order->GetUnloadType() == OUFB_UNLOAD);
 
-					/* Can only do refitting when stopping at the destination and loading cargo. */
+					/* Can only do refitting when stopping at the destination and loading cargo.
-					this->SetWidgetDisabledState(WID_O_REFIT_DROPDOWN, !this->can_do_autorefit || order->GetLoadType() == OLFB_NO_LOAD || order->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION);
+					 * Also enable the button if a refit is already set to allow clearing it. */
+					this->SetWidgetDisabledState(WID_O_REFIT_DROPDOWN,
+							order->GetLoadType() == OLFB_NO_LOAD || (order->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) ||
+							((!this->can_do_refit || !this->can_do_autorefit) && !order->IsRefit()));
 
 					break;
 
@@ -1048,7 +1055,9 @@ public:
 					}
 					/* Disable refit button if the order is no 'always go' order.
 					 * However, keep the service button enabled for refit-orders to allow clearing refits (without knowing about ctrl). */
-					this->SetWidgetDisabledState(WID_O_REFIT, (order->GetDepotOrderType() & ODTFB_SERVICE) || (order->GetDepotActionType() & ODATFB_HALT));
+					this->SetWidgetDisabledState(WID_O_REFIT,
+							(order->GetDepotOrderType() & ODTFB_SERVICE) || (order->GetDepotActionType() & ODATFB_HALT) ||
+							(!this->can_do_refit && !order->IsRefit()));
 					this->SetWidgetLoweredState(WID_O_SERVICE, order->GetDepotOrderType() & ODTFB_SERVICE);
 					break;
 

src/os/macosx/osx_stdafx.h

@@ -75,4 +75,9 @@ typedef unsigned int NSUInteger;
 #endif /* __LP64__ */
 #endif /* NSInteger */
 
+/* OS X SDK versions >= 10.5 have a non-const iconv. */
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
+#	define HAVE_NON_CONST_ICONV
+#endif
+
 #endif /* MACOS_STDAFX_H */