Moved an erroneous sdl/utils.hpp include out of text header

This belonged in the implementation. Meant I had to include util.hpp in a few more places, though.

src/font/text.cpp

@@ -28,6 +28,7 @@
 #include "gui/widgets/helper.hpp"
 #include "gui/core/log.hpp"
 #include "gui/core/point.hpp"
+#include "sdl/utils.hpp"
 #include "serialization/string_utils.hpp"
 #include "serialization/unicode.hpp"
 #include "preferences.hpp"

src/font/text.hpp

@@ -18,7 +18,6 @@
 #include "font/font_options.hpp"
 #include "color.hpp"
 #include "sdl/surface.hpp"
-#include "sdl/utils.hpp"
 #include "serialization/unicode_types.hpp"
 
 #include <pango/pango.h>

src/game_initialization/depcheck.cpp

@@ -19,6 +19,7 @@
 #include "formula/string_utils.hpp"
 #include "gettext.hpp"
 #include "log.hpp"
+#include "util.hpp"
 
 #include "gui/dialogs/depcheck_confirm_change.hpp"
 #include "gui/dialogs/depcheck_select_new.hpp"

src/gui/dialogs/game_load.cpp

@@ -42,6 +42,7 @@
 #include "image.hpp"
 #include "language.hpp"
 #include "serialization/string_utils.hpp"
+#include "util.hpp"
 
 #include <cctype>
 #include "utils/functional.hpp"