When reporting the file delta results, include the path to the module
which creates the module.
Bug: 116612996
Test: python system_image_diff.py <system1> <system2>
Change-Id: Iaa2cd5d063616b04b78d2cf339093e5e2d5e047c
Allow comparing "out" folders that do not share a common Android source
root eg. workspace1/out/... to workspace2/out/...
Test: python system_image_diff.py <system1> <system2>
Bug: 116612996
Change-Id: I0256bbc9196b11df49fd61cd56d44f428907838b