Merge r5231 HEAD
Fix missing const preventing successful builds
Swap 'Bouncy Coils' and 'Tux the Builder' on worldmap so
player already knows how to carry objects.
Disable console
Fix useless warnings using most locales
Fixes for gcc3 and newer compilers
Fixes for gcc4.4 and newer compilers
Remove extra curl header from 'addon_manager.cpp'
Fixes for gcc4.6 and newer compilers
Squirrel gcc4.7 fixes
Add missing cstring header to 'tinygettext.cpp'
Add missing header to sdl_texture.hpp
Fix format not a string literal and no format arguments warnings
Set 640x480 as the default resolution

Due to a bug, other resolutions may be quite buggy, but 640x480 should be fine now.