bsnes 2014 Accuracy, bsnes 2014 Balanced, and bsnes 2014 Performance

Currently there are no cores (bsnes_accuracy.so, bsnes_balanced.so, bsnes_performance.so) for any architecture (I checked all latest sub-dirs for all architectures in https://buildbot.libretro.com/nightly/ with a script) for:
bsnes_accuracy.md
bsnes_balanced.md
bsnes_performance.md

The core names are bsnes2014_accuracy_libretro.so, bsnes2014_balanced_libretro.so, and bsnes2014_performance_libretro.so respectively. Example for https://buildbot.libretro.com/nightly/linux/x86_64/latest/ :

• https://buildbot.libretro.com/nightly/linux/x86_64/latest/bsnes2014_accuracy_libretro.so.zip
• https://buildbot.libretro.com/nightly/linux/x86_64/latest/bsnes2014_balanced_libretro.so.zip
• https://buildbot.libretro.com/nightly/linux/x86_64/latest/bsnes2014_performance_libretro.so.zip

Workaround 1: Rename the old documents

• Rename https://github.com/libretro/docs/blob/master/docs/library/bsnes_accuracy.md to https://github.com/libretro/docs/blob/master/docs/library/bsnes2014_accuracy.md
• Rename https://github.com/libretro/docs/blob/master/docs/library/bsnes_balanced.md to https://github.com/libretro/docs/blob/master/docs/library/bsnes2014_balanced.md
• Rename https://github.com/libretro/docs/blob/master/docs/library/bsnes_performance.md to https://github.com/libretro/docs/blob/master/docs/library/bsnes2014_performance.md

Workaround 2: Add new documents

Keep

• https://github.com/libretro/docs/blob/master/docs/library/bsnes_accuracy.md
• https://github.com/libretro/docs/blob/master/docs/library/bsnes_balanced.md
• https://github.com/libretro/docs/blob/master/docs/library/bsnes_performance.md

And add these pages in addition

• https://github.com/libretro/docs/blob/master/docs/library/bsnes2014_accuracy.md
• https://github.com/libretro/docs/blob/master/docs/library/bsnes2014_balanced.md
• https://github.com/libretro/docs/blob/master/docs/library/bsnes2014_performance.md

Start by reading the existing docs/library/bsnes_accuracy.md, bsnes_balanced.md, and bsnes_performance.md pages and compare their names with the bsnes2014 core names listed in the issue. Decide between renaming the existing pages or adding bsnes2014_accuracy.md, bsnes2014_balanced.md, and bsnes2014_performance.md. Done means the documentation paths match the available cores without losing coverage for the existing bsnes pages.