mirror: Make Class::Status 64-bit field

Temporarily merge this CL, then revert.

We need it to submit Zhengkai's CL to go/lem because of the libcore
change.

Bug: 64692057
Test: art/test.py -j32 --host
Change-Id: If104832c66973e6ffe8baf81ad1b32237ee78a80
4 files changed