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*: revbump for libsndfile

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*: revbump after fontconfig bl3 changes (libuuid removal)

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corsix-th: Update to 0.64

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Version 0.64 - released June 2020
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# New Features
* EXPERIMENTAL: ISO images may be used as a Theme Hospital data source. Known
  limitations of using ISOs are that the in game movies will not play, and the
  first time Windows install will not allow selecting the ISO file in the file
  dialog.

# Bug Fixes
* Confirm dialogs are now sized properly in all languages.
* Many circumstances causing rooms to become stuck have been fixed.
* Level 6 map issues causing errors have been corrected.
* Epidemic patients couldn't be treated while they were seeking a room.
* CJK text layout issues have been corrected.
* French Level 5 description was replaced so that formatting characters
  no longer show up in it.
* Some undefined behavior and potential memory leaks have been corrected.
* Earthquake cheat now breaks your hospital instead of the game.

# Translations
* Updated translations for Chinese, French, Brazilian Portugese.

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*: recursive bump for libffi

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games: Add corsix-th

A reimplementation of the 1997 Bullfrog business sim Theme Hospital.

As well as faithfully recreating the original, CorsixTH adds support for
modern operating systems, high resolutions and much more.