Optimize boot-image dirty object layout

Add dirty object offsets to imgdiag output
Modify dex2oat dirty-image-objects handling to match imgdiag output by
offsets and bin dirty objects

Test: ART APEX install with old/new dirty-image-objects format
Test: measure dirty page count with imgdiag
Change-Id: I386711c8b31e0770518f18faa699cfe1aa7549a5
4 files changed