bsnes Phoenix GUI Filter Changes

Byuu has added support for binary filters in his Phoenix GUI as of v073, so we can finally use cgwg's CRT Curved shader in conjunction with blargg's NTSC filter! These binary filters are loaded just like shaders, i.e., via a dialog box in the video options.

You can download the available filters, compiled for 64-bit Linux, here or compiled for 32-bit here. These filters do not appear to work on Windows systems.