Added per-character color support to love.graphics.print/printf and Text objects. Resolves issue #865.

The aforementioned functions now optionally accept an array instead of a plain string. The array is in the format of: {{r, g, b [, a]}, "first colored text, ", {r, g, b [, a]}, "second colored text", ...}, where the color values specify the color to use in the next section of the text.

src/modules/graphics/opengl/wrap_Text.h

@@ -32,6 +32,7 @@ namespace opengl
 {
 
 Text *luax_checktext(lua_State *L, int idx);
+void luax_checkcoloredstring(lua_State *L, int idx, std::vector<Font::ColoredString> &strings);
 int w_Text_set(lua_State *L);
 int w_Text_setf(lua_State *L);
 int w_Text_add(lua_State *L);