Add explicit uint8_t casts for Blake2's key length.
via @evoskuil
Do not remove previously generated files from the distribution.
Merge branch 'master' of github.com:jedisct1/libsodium

* 'master' of github.com:jedisct1/libsodium:
  Add explicit uint8_t casts for Blake2's key length. via @evoskuil
Revert "Move Doxygen API doc to its own branch until it is complete."

This reverts commit 5ad45ee98cbaa18e39f6570901aab56463d66b82.
Added missing O in constant name
Added missing O in constant name
Mention the Docker Android build