(svn r21570) -Add: Allow to select a vehicle and the following chain with a keyboard shortcut.

src/lang/english.txt

@@ -3131,7 +3131,7 @@ STR_REFIT_CAPTION                                               :{WHITE}{VEHICLE
 STR_REFIT_TITLE                                                 :{GOLD}Select cargo type to carry:
 STR_REFIT_NEW_CAPACITY_COST_OF_REFIT                            :{BLACK}New capacity: {GOLD}{CARGO}{}{BLACK}Cost of refit: {GOLD}{CURRENCY}
 STR_REFIT_NEW_CAPACITY_COST_OF_AIRCRAFT_REFIT                   :{BLACK}New capacity: {GOLD}{CARGO}, {GOLD}{CARGO}{}{BLACK}Cost of refit: {GOLD}{CURRENCY}
-STR_REFIT_SELECT_VEHICLES_TOOLTIP                               :{BLACK}Select the vehicles to refit. Dragging with the mouse allows to select multiple vehicles. Clicking on an empty space will select the whole vehicle
+STR_REFIT_SELECT_VEHICLES_TOOLTIP                               :{BLACK}Select the vehicles to refit. Dragging with the mouse allows to select multiple vehicles. Clicking on an empty space will select the whole vehicle. Ctrl+Click will select a vehicle and the following chain
 
 STR_REFIT_TRAIN_LIST_TOOLTIP                                    :{BLACK}Select type of cargo for train to carry
 STR_REFIT_ROAD_VEHICLE_LIST_TOOLTIP                             :{BLACK}Select type of cargo for road vehicle to carry

src/vehicle_gui.cpp

@@ -766,7 +766,10 @@ struct RefitWindow : public Window {
 				}
 
 				/* If the selection is not correct, clear it. */
-				if (this->num_vehicles != 0) break;
+				if (this->num_vehicles != 0) {
+					if (_ctrl_pressed) this->num_vehicles = UINT8_MAX;
+					break;
+				}
 				/* FALL THROUGH */
 			}
 
@@ -787,7 +790,7 @@ struct RefitWindow : public Window {
 				this->click_x = GetClickPosition(pt.x - nwi->pos_x);
 				this->SetSelectedVehicles(pt.x - nwi->pos_x);
 				this->SetWidgetDirty(VRW_VEHICLE_PANEL_DISPLAY);
-				SetObjectToPlaceWnd(SPR_CURSOR_MOUSE, PAL_NONE, HT_DRAG, this);
+				if (!_ctrl_pressed) SetObjectToPlaceWnd(SPR_CURSOR_MOUSE, PAL_NONE, HT_DRAG, this);
 				break;
 			}