Add support for library names.

The new xmlnotice utility includes library names in the xml notice.

Supports both the new and the old schema and allows mixing new and old.

Bug: 151177513
Bug: 210912771

Test: m all dist
Test: flash; About Phone -> Legal Information -> Third-party licenses

Change-Id: I69c294a62d1653e9a0ff487e25b1d2eda0b777d3