[SCM] multi-platform emulator, including NES, GB/A, Lynx, PC Engine annotated tag, upstream/0.9.21, created. upstream/0.9.21

[Stephen Kitt]

The annotated tag, upstream/0.9.21 has been created
        at  ff0cb1613a58797fac41f875236948892470ad26 (tag)
   tagging  5c6ffda2356ae15af2b2a4a0f8181b22146f1f3f (commit)
  replaces  upstream/0.9.19
 tagged by  Stephen Kitt
        on  Mon Apr 2 01:42:28 2012 +0200

- Shortlog ------------------------------------------------------------
Upstream version 0.9.21

Stephen Kitt (1):
      Imported Upstream version 0.9.21

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multi-platform emulator, including NES, GB/A, Lynx, PC Engine