Merge branch 'master' into jgrpp

# Conflicts:
#	src/airport_gui.cpp
#	src/blitter/32bpp_optimized.cpp
#	src/blitter/32bpp_simple.cpp
#	src/blitter/32bpp_sse2.cpp
#	src/blitter/8bpp_optimized.cpp
#	src/blitter/8bpp_simple.cpp
#	src/blitter/null.cpp
#	src/build_vehicle_gui.cpp
#	src/company_gui.cpp
#	src/crashlog.cpp
#	src/dropdown.cpp
#	src/dropdown_type.h
#	src/genworld_gui.cpp
#	src/gfx.cpp
#	src/main_gui.cpp
#	src/newgrf_debug_gui.cpp
#	src/news_gui.cpp
#	src/news_type.h
#	src/openttd.cpp
#	src/order_gui.cpp
#	src/settings.cpp
#	src/settings_gui.cpp
#	src/signs.cpp
#	src/smallmap_gui.cpp
#	src/spritecache.cpp
#	src/spriteloader/grf.cpp
#	src/texteff.cpp
#	src/toolbar_gui.cpp
#	src/town_cmd.cpp
#	src/vehicle.cpp
#	src/vehicle_gui.cpp
#	src/video/opengl.cpp
#	src/viewport.cpp
#	src/waypoint_cmd.cpp
#	src/zoom_type.h

src/news_type.h

@@ -15,6 +15,7 @@
 #include "gfx_type.h"
 #include "strings_type.h"
 #include "sound_type.h"
+#include <list>
 #include <vector>
 
 /**
@@ -126,8 +127,6 @@ struct NewsAllocatedData {
 
 /** Information about a single item of news. */
 struct NewsItem {
-	NewsItem *prev;              ///< Previous news item
-	NewsItem *next;              ///< Next news item
 	StringID string_id;          ///< Message text
 	CalTime::Date date;          ///< Date of the news
 	uint64_t creation_tick;      ///< Tick when news was created
@@ -169,4 +168,7 @@ struct CompanyNewsInformation : NewsAllocatedData {
 	CompanyNewsInformation(const struct Company *c, const struct Company *other = nullptr);
 };
 
+using NewsContainer = std::list<NewsItem>; ///< Container type for storing news items.
+using NewsIterator = NewsContainer::const_iterator; ///< Iterator type for news items.
+
 #endif /* NEWS_TYPE_H */