[SNES] SSNES v0.9.1

SSNES v0.9.1 31.10.2011

• Fix build for Clang.
• Fix deprecation warnings in FFmpeg.
• Juse more sane SSE optimizations for sample conversions.
• Allow screenshots while paused.
• Check more explicitly for XVideo/Xext libraries.
• More accurate colors for rewind.
• Screenshot directory now defaults to ROM directory.
• Allow additional meta-keys to be read within Python scripts.
• Use floating point uniforms for state tracker.
• Add backwards compatible extension to libsnes allowing much better handling of window geometries.
• Change default aspect ratio handling to 1:1 PAR.
• Add Select all/Clear all to log window in Phoenix.
• Fix strange bug causing random events to fire off in Phoenix (Windows).
• Several bugfixes.