v1.3.20-1

v1.3.20-1封装于XCGUI官方3.2.0版本.
增加Svg类.
增加函数:
XC_LoadStyleFromStringW();
XC_ShowSvgFrame();
XImage_LoadSvg();
XImage_LoadSvgFile();
XImage_LoadSvgString();
XImage_GetSvg();
XSvg_LoadFile();
XSvg_LoadString();
XSvg_LoadZip();
XSvg_LoadRes();
XSvg_SetSize();
XSvg_GetSize();
XSvg_GetWidth();
XSvg_GetHeight();
XSvg_SetOffset();
XSvg_GetOffset();
XSvg_GetViewBox();
XSvg_EnableAutoDestroy();
XSvg_AddRef();
XSvg_Release();
XSvg_GetRefCount();
XSvg_Destroy();
XDraw_DrawSvgSrc();
XDraw_DrawSvg();
XDraw_DrawSvgEx();
XDraw_DrawSvgSize();
XWnd_AddBkBorder();
XWnd_AddBkFill();
XWnd_AddBkImage();
XWnd_GetBkInfoCount();
XWnd_ClearBkInfo();
Font_Info_Name();
UintPtrToString();