Snes9x 1.51 i11-fix 发布

Snes9x 1.51 i11-fix 发布，这是一个基于官方v1.51版的修正改进版。主要是修正了一些截图的BUG，快下载吧。

Imported some of fixes from improvement11.
- Snes9x 1.51 i11-fix Windows binary
- Snes9x 1.51 i11-fix source code diff

This should fix snapshot inconsistent issue, though this won't fix terrible desync bug

论坛下载：Snes9x 1.51 i11-fix