SDK v9.0.0

Breaking changes

• #258 - Rename atari8 to atari8-dos - @cwedgwood

Optimizations

• #259 - Move atexit to cxa-atexit.cc
  • This prevents references to stdlib.cc functions (e.g., calloc) from bringing in the atexit runtime support unnecessarily.

Bug fixes

• Prevent NES GTROM mapper from using CHR-ROM
  • The original implementation of this mapper always had 16KiB of CHR-RAM, and its mapper, 111, is shared with another Chinese fan translation project. Newer Mesen detect the fan translation by the presence of CHR-ROM, so it's not the case that CHR-ROM GTROM will work across widely-used emulators.

Miscellaneous

• Merged from upstream llvm/llvm-project@c43c86c