Added love.math.gammaToLinear and love.math.linearToGamma for converting RGB color values from the sRGB color-space to linear and vice-versa.

src/modules/math/wrap_Math.h

@@ -38,6 +38,8 @@ int w_newRandomGenerator(lua_State *L);
 int w_newBezierCurve(lua_State *L);
 int w_triangulate(lua_State *L);
 int w_isConvex(lua_State *L);
+int w_gammaToLinear(lua_State *L);
+int w_linearToGamma(lua_State *L);
 int w_noise(lua_State *L);
 extern "C" LOVE_EXPORT int luaopen_love_math(lua_State *L);