Do not exporting mysqld entry points directly.
This is needed for mariabackup, to load encryption plugins on Windows.
All plugins are "pure" by default. To mark plugin "impure"
it should use RECOMPILE_FOR_EMBEDDED or STORAGE_ENGINE keyword.
AWS C++ SDK always defaults region to us-east-1 for clientConfiguration
(ignoring config file or env.variable)
This patch introduces a plugin variable 'region' to make it usable
for master keys created in regions other than 'us-east-1'.
- Library path's are different now
- New dependency on Linux libuuid
- Add calls for SDK Initialization/shutdown
- Also add request_timeout parameter, default SDK HTTPs timeout appears
to be too short in my tests
