Convert Java/JNI to 64-bit, part 2.

This changes BaseObj to support 64-bit IDs. There are a few caveats:

1. Since it is deprecated, RSG will not support 64-bit.
2. Currently, methods that pass arrays of IDs to the driver are not supported in 64-bit. This will be fixed in a later CL.

bug 11332320

Change-Id: If0dbecc8b285e260f767e441e05088b6a1b749a2
30 files changed