Replaced love.graphics.isSupported and love.graphics.getSystemLimit with love.graphics.getSupported and love.graphics.getSystemLimits, which return tables with graphics feature / system limit enum names as keys, and support status / limit numbers as values.

Removed the 'hdrcanvas', 'dxt', and 'bc5' graphics feature enums now that they're deprecated in 0.9.x in favour of getCanvasFormats and getCompressedImageFormats.

--HG--
branch : minor

src/modules/graphics/opengl/wrap_Graphics.h

@@ -88,11 +88,11 @@ int w_setCanvas(lua_State *L);
 int w_getCanvas(lua_State *L);
 int w_setShader(lua_State *L);
 int w_getShader(lua_State *L);
-int w_isSupported(lua_State *L);
+int w_getSupported(lua_State *L);
 int w_getCanvasFormats(lua_State *L);
 int w_getCompressedImageFormats(lua_State *L);
 int w_getRendererInfo(lua_State *L);
-int w_getSystemLimit(lua_State *L);
+int w_getSystemLimits(lua_State *L);
 int w_draw(lua_State *L);
 int w_print(lua_State *L);
 int w_printf(lua_State *L);