UWP: Crash in .NET native release builds when consuming winsqlite3.dll

[rigdern]

Two changes need to be made to all of the DllImports for "winsqlite3":

1. Calling convention has to be switched from Cdecl to StdCall
2. ExactSpelling has to be set to true

For example:

[DllImport("winsqlite3", EntryPoint = "sqlite3_open", CallingConvention = CallingConvention.Cdecl)]

should be:

[DllImport("winsqlite3", EntryPoint = "sqlite3_open", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)]