IOCipher 64-bit builds

IOCipher v0.5 includes fulil 64-bit support and works with the latest SQLCipher versions. This means that the minimum supported SDK version had to be bumped to android-14, which is still older than what Google Play Services and Android Support libraries require.

One important thing to note is that newer SQLCipher versions require an upgrade procedure since they changed how the data is encrypted. Since IOCipher does use a SQLCipher database, and IOCipher virtual disks will have to be upgraded. That can be done by directly using the SQLCipher migration method on your IOCipher database files before opening them again. It should be possible to stick with SQLCipher v3.5.9 to avoid this, but this has not been tested.